20316160000

素因数分解:

$2^{20}\times 5^4\times {\mathrm{31}}^1$

素因数の和:91

約数の個数: 210

約数和(自身を含む): 52411997792

約数和(自身を除く): 32095837792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 124, 125, 128, 155, 160, 200, 248, 250, 256, 310, 320, 400, 496, 500, 512, 620, 625, 640, 775, 800, 992, 1000, 1024, 1240, 1250, 1280, 1550, 1600, 1984, 2000, 2048, 2480, 2500, 2560, 3100, 3200, 3875, 3968, 4000, 4096, 4960, 5000, 5120, 6200, 6400, 7750, 7936, 8000, 8192, 9920, 10000, 10240, 12400, 12800, 15500, 15872, 16000, 16384, 19375, 19840, 20000, 20480, 24800, 25600, 31000, 31744, 32000, 32768, 38750, 39680, 40000, 40960, 49600, 51200, 62000, 63488, 64000, 65536, 77500, 79360, 80000, 81920, 99200, 102400, 124000, 126976, 128000, 131072, 155000, 158720, 160000, 163840, 198400, 204800, 248000, 253952, 256000, 262144, 310000, 317440, 320000, 327680, 396800, 409600, 496000, 507904, 512000, 524288, 620000, 634880, 640000, 655360, 793600, 819200, 992000, 1015808, 1024000, 1048576, 1240000, 1269760, 1280000, 1310720, 1587200, 1638400, 1984000, 2031616, 2048000, 2480000, 2539520, 2560000, 2621440, 3174400, 3276800, 3968000, 4063232, 4096000, 4960000, 5079040, 5120000, 5242880, 6348800, 6553600, 7936000, 8126464, 8192000, 9920000, 10158080, 10240000, 12697600, 13107200, 15872000, 16252928, 16384000, 19840000, 20316160, 20480000, 25395200, 26214400, 31744000, 32505856, 32768000, 39680000, 40632320, 40960000, 50790400, 63488000, 65536000, 79360000, 81264640, 81920000, 101580800, 126976000, 131072000, 158720000, 162529280, 163840000, 203161600, 253952000, 317440000, 327680000, 406323200, 507904000, 634880000, 655360000, 812646400, 1015808000, 1269760000, 2031616000, 2539520000, 4063232000, 5079040000, 10158080000, 20316160000]

約数ペア:

[(1, 20316160000), (2, 10158080000), (4, 5079040000), (5, 4063232000), (8, 2539520000), (10, 2031616000), (16, 1269760000), (20, 1015808000), (25, 812646400), (31, 655360000), (32, 634880000), (40, 507904000), (50, 406323200), (62, 327680000), (64, 317440000), (80, 253952000), (100, 203161600), (124, 163840000), (125, 162529280), (128, 158720000), (155, 131072000), (160, 126976000), (200, 101580800), (248, 81920000), (250, 81264640), (256, 79360000), (310, 65536000), (320, 63488000), (400, 50790400), (496, 40960000), (500, 40632320), (512, 39680000), (620, 32768000), (625, 32505856), (640, 31744000), (775, 26214400), (800, 25395200), (992, 20480000), (1000, 20316160), (1024, 19840000), (1240, 16384000), (1250, 16252928), (1280, 15872000), (1550, 13107200), (1600, 12697600), (1984, 10240000), (2000, 10158080), (2048, 9920000), (2480, 8192000), (2500, 8126464), (2560, 7936000), (3100, 6553600), (3200, 6348800), (3875, 5242880), (3968, 5120000), (4000, 5079040), (4096, 4960000), (4960, 4096000), (5000, 4063232), (5120, 3968000), (6200, 3276800), (6400, 3174400), (7750, 2621440), (7936, 2560000), (8000, 2539520), (8192, 2480000), (9920, 2048000), (10000, 2031616), (10240, 1984000), (12400, 1638400), (12800, 1587200), (15500, 1310720), (15872, 1280000), (16000, 1269760), (16384, 1240000), (19375, 1048576), (19840, 1024000), (20000, 1015808), (20480, 992000), (24800, 819200), (25600, 793600), (31000, 655360), (31744, 640000), (32000, 634880), (32768, 620000), (38750, 524288), (39680, 512000), (40000, 507904), (40960, 496000), (49600, 409600), (51200, 396800), (62000, 327680), (63488, 320000), (64000, 317440), (65536, 310000), (77500, 262144), (79360, 256000), (80000, 253952), (81920, 248000), (99200, 204800), (102400, 198400), (124000, 163840), (126976, 160000), (128000, 158720), (131072, 155000)]