18697640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{877}}^1$

素因数の和:942

約数の個数: 64

約数和(自身を含む): 46463760

約数和(自身を除く): 27766120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 877, 1066, 1640, 1754, 2132, 2665, 3508, 4264, 4385, 5330, 7016, 8770, 10660, 11401, 17540, 21320, 22802, 35080, 35957, 45604, 57005, 71914, 91208, 114010, 143828, 179785, 228020, 287656, 359570, 456040, 467441, 719140, 934882, 1438280, 1869764, 2337205, 3739528, 4674410, 9348820, 18697640]

約数ペア:

[(1, 18697640), (2, 9348820), (4, 4674410), (5, 3739528), (8, 2337205), (10, 1869764), (13, 1438280), (20, 934882), (26, 719140), (40, 467441), (41, 456040), (52, 359570), (65, 287656), (82, 228020), (104, 179785), (130, 143828), (164, 114010), (205, 91208), (260, 71914), (328, 57005), (410, 45604), (520, 35957), (533, 35080), (820, 22802), (877, 21320), (1066, 17540), (1640, 11401), (1754, 10660), (2132, 8770), (2665, 7016), (3508, 5330), (4264, 4385)]