20157440000

素因数分解:

$2^{13}\times 5^4\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:204

約数の個数: 280

約数和(自身を含む): 52408823808

約数和(自身を除く): 32251383808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 125, 127, 128, 155, 160, 200, 248, 250, 254, 256, 310, 320, 400, 496, 500, 508, 512, 620, 625, 635, 640, 775, 800, 992, 1000, 1016, 1024, 1240, 1250, 1270, 1280, 1550, 1600, 1984, 2000, 2032, 2048, 2480, 2500, 2540, 2560, 3100, 3175, 3200, 3875, 3937, 3968, 4000, 4064, 4096, 4960, 5000, 5080, 5120, 6200, 6350, 6400, 7750, 7874, 7936, 8000, 8128, 8192, 9920, 10000, 10160, 10240, 12400, 12700, 12800, 15500, 15748, 15872, 15875, 16000, 16256, 19375, 19685, 19840, 20000, 20320, 20480, 24800, 25400, 25600, 31000, 31496, 31744, 31750, 32000, 32512, 38750, 39370, 39680, 40000, 40640, 40960, 49600, 50800, 51200, 62000, 62992, 63488, 63500, 64000, 65024, 77500, 78740, 79360, 79375, 80000, 81280, 98425, 99200, 101600, 102400, 124000, 125984, 126976, 127000, 128000, 130048, 155000, 157480, 158720, 158750, 160000, 162560, 196850, 198400, 203200, 204800, 248000, 251968, 253952, 254000, 256000, 260096, 310000, 314960, 317440, 317500, 320000, 325120, 393700, 396800, 406400, 492125, 496000, 503936, 508000, 512000, 520192, 620000, 629920, 634880, 635000, 640000, 650240, 787400, 793600, 812800, 984250, 992000, 1007872, 1016000, 1024000, 1040384, 1240000, 1259840, 1269760, 1270000, 1280000, 1300480, 1574800, 1587200, 1625600, 1968500, 1984000, 2015744, 2032000, 2460625, 2480000, 2519680, 2540000, 2560000, 2600960, 3149600, 3174400, 3251200, 3937000, 3968000, 4031488, 4064000, 4921250, 4960000, 5039360, 5080000, 5120000, 5201920, 6299200, 6348800, 6502400, 7874000, 7936000, 8062976, 8128000, 9842500, 9920000, 10078720, 10160000, 12598400, 13004800, 15748000, 15872000, 16125952, 16256000, 19685000, 19840000, 20157440, 20320000, 25196800, 26009600, 31496000, 31744000, 32251904, 32512000, 39370000, 39680000, 40314880, 40640000, 50393600, 62992000, 65024000, 78740000, 79360000, 80629760, 81280000, 100787200, 125984000, 130048000, 157480000, 158720000, 161259520, 162560000, 201574400, 251968000, 314960000, 325120000, 403148800, 503936000, 629920000, 650240000, 806297600, 1007872000, 1259840000, 2015744000, 2519680000, 4031488000, 5039360000, 10078720000, 20157440000]

約数ペア:

[(1, 20157440000), (2, 10078720000), (4, 5039360000), (5, 4031488000), (8, 2519680000), (10, 2015744000), (16, 1259840000), (20, 1007872000), (25, 806297600), (31, 650240000), (32, 629920000), (40, 503936000), (50, 403148800), (62, 325120000), (64, 314960000), (80, 251968000), (100, 201574400), (124, 162560000), (125, 161259520), (127, 158720000), (128, 157480000), (155, 130048000), (160, 125984000), (200, 100787200), (248, 81280000), (250, 80629760), (254, 79360000), (256, 78740000), (310, 65024000), (320, 62992000), (400, 50393600), (496, 40640000), (500, 40314880), (508, 39680000), (512, 39370000), (620, 32512000), (625, 32251904), (635, 31744000), (640, 31496000), (775, 26009600), (800, 25196800), (992, 20320000), (1000, 20157440), (1016, 19840000), (1024, 19685000), (1240, 16256000), (1250, 16125952), (1270, 15872000), (1280, 15748000), (1550, 13004800), (1600, 12598400), (1984, 10160000), (2000, 10078720), (2032, 9920000), (2048, 9842500), (2480, 8128000), (2500, 8062976), (2540, 7936000), (2560, 7874000), (3100, 6502400), (3175, 6348800), (3200, 6299200), (3875, 5201920), (3937, 5120000), (3968, 5080000), (4000, 5039360), (4064, 4960000), (4096, 4921250), (4960, 4064000), (5000, 4031488), (5080, 3968000), (5120, 3937000), (6200, 3251200), (6350, 3174400), (6400, 3149600), (7750, 2600960), (7874, 2560000), (7936, 2540000), (8000, 2519680), (8128, 2480000), (8192, 2460625), (9920, 2032000), (10000, 2015744), (10160, 1984000), (10240, 1968500), (12400, 1625600), (12700, 1587200), (12800, 1574800), (15500, 1300480), (15748, 1280000), (15872, 1270000), (15875, 1269760), (16000, 1259840), (16256, 1240000), (19375, 1040384), (19685, 1024000), (19840, 1016000), (20000, 1007872), (20320, 992000), (20480, 984250), (24800, 812800), (25400, 793600), (25600, 787400), (31000, 650240), (31496, 640000), (31744, 635000), (31750, 634880), (32000, 629920), (32512, 620000), (38750, 520192), (39370, 512000), (39680, 508000), (40000, 503936), (40640, 496000), (40960, 492125), (49600, 406400), (50800, 396800), (51200, 393700), (62000, 325120), (62992, 320000), (63488, 317500), (63500, 317440), (64000, 314960), (65024, 310000), (77500, 260096), (78740, 256000), (79360, 254000), (79375, 253952), (80000, 251968), (81280, 248000), (98425, 204800), (99200, 203200), (101600, 198400), (102400, 196850), (124000, 162560), (125984, 160000), (126976, 158750), (127000, 158720), (128000, 157480), (130048, 155000)]