161259520

素因数分解:

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

素因数の和:189

約数の個数: 112

約数和(自身を含む): 402628608

約数和(自身を除く): 241369088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 127, 128, 155, 160, 248, 254, 256, 310, 320, 496, 508, 512, 620, 635, 640, 992, 1016, 1024, 1240, 1270, 1280, 1984, 2032, 2048, 2480, 2540, 2560, 3937, 3968, 4064, 4096, 4960, 5080, 5120, 7874, 7936, 8128, 8192, 9920, 10160, 10240, 15748, 15872, 16256, 19685, 19840, 20320, 20480, 31496, 31744, 32512, 39370, 39680, 40640, 40960, 62992, 63488, 65024, 78740, 79360, 81280, 125984, 126976, 130048, 157480, 158720, 162560, 251968, 253952, 260096, 314960, 317440, 325120, 503936, 520192, 629920, 634880, 650240, 1007872, 1040384, 1259840, 1269760, 1300480, 2015744, 2519680, 2600960, 4031488, 5039360, 5201920, 8062976, 10078720, 16125952, 20157440, 32251904, 40314880, 80629760, 161259520]

約数ペア:

[(1, 161259520), (2, 80629760), (4, 40314880), (5, 32251904), (8, 20157440), (10, 16125952), (16, 10078720), (20, 8062976), (31, 5201920), (32, 5039360), (40, 4031488), (62, 2600960), (64, 2519680), (80, 2015744), (124, 1300480), (127, 1269760), (128, 1259840), (155, 1040384), (160, 1007872), (248, 650240), (254, 634880), (256, 629920), (310, 520192), (320, 503936), (496, 325120), (508, 317440), (512, 314960), (620, 260096), (635, 253952), (640, 251968), (992, 162560), (1016, 158720), (1024, 157480), (1240, 130048), (1270, 126976), (1280, 125984), (1984, 81280), (2032, 79360), (2048, 78740), (2480, 65024), (2540, 63488), (2560, 62992), (3937, 40960), (3968, 40640), (4064, 39680), (4096, 39370), (4960, 32512), (5080, 31744), (5120, 31496), (7874, 20480), (7936, 20320), (8128, 19840), (8192, 19685), (9920, 16256), (10160, 15872), (10240, 15748)]