40381640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{983}}^1$

素因数の和:1086

約数の個数: 64

約数和(自身を含む): 99187200

約数和(自身を除く): 58805560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 158, 260, 316, 395, 520, 632, 790, 983, 1027, 1580, 1966, 2054, 3160, 3932, 4108, 4915, 5135, 7864, 8216, 9830, 10270, 12779, 19660, 20540, 25558, 39320, 41080, 51116, 63895, 77657, 102232, 127790, 155314, 255580, 310628, 388285, 511160, 621256, 776570, 1009541, 1553140, 2019082, 3106280, 4038164, 5047705, 8076328, 10095410, 20190820, 40381640]

約数ペア:

[(1, 40381640), (2, 20190820), (4, 10095410), (5, 8076328), (8, 5047705), (10, 4038164), (13, 3106280), (20, 2019082), (26, 1553140), (40, 1009541), (52, 776570), (65, 621256), (79, 511160), (104, 388285), (130, 310628), (158, 255580), (260, 155314), (316, 127790), (395, 102232), (520, 77657), (632, 63895), (790, 51116), (983, 41080), (1027, 39320), (1580, 25558), (1966, 20540), (2054, 19660), (3160, 12779), (3932, 10270), (4108, 9830), (4915, 8216), (5135, 7864)]