681661760

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163861}}^1$

素因数の和:163891

約数の個数: 56

約数和(自身を含む): 1748079816

約数和(自身を除く): 1066418056

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 163861, 327722, 655444, 819305, 1310888, 1638610, 2130193, 2621776, 3277220, 4260386, 5243552, 6554440, 8520772, 10487104, 10650965, 13108880, 17041544, 21301930, 26217760, 34083088, 42603860, 52435520, 68166176, 85207720, 136332352, 170415440, 340830880, 681661760]

約数ペア:

[(1, 681661760), (2, 340830880), (4, 170415440), (5, 136332352), (8, 85207720), (10, 68166176), (13, 52435520), (16, 42603860), (20, 34083088), (26, 26217760), (32, 21301930), (40, 17041544), (52, 13108880), (64, 10650965), (65, 10487104), (80, 8520772), (104, 6554440), (130, 5243552), (160, 4260386), (208, 3277220), (260, 2621776), (320, 2130193), (416, 1638610), (520, 1310888), (832, 819305), (1040, 655444), (2080, 327722), (4160, 163861)]