664489480

素因数分解:

$2^3\times 5^1\times {\mathrm{2381}}^1\times {\mathrm{6977}}^1$

素因数の和:9369

約数の個数: 32

約数和(自身を含む): 1495943640

約数和(自身を除く): 831454160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2381, 4762, 6977, 9524, 11905, 13954, 19048, 23810, 27908, 34885, 47620, 55816, 69770, 95240, 139540, 279080, 16612237, 33224474, 66448948, 83061185, 132897896, 166122370, 332244740, 664489480]

約数ペア:

[(1, 664489480), (2, 332244740), (4, 166122370), (5, 132897896), (8, 83061185), (10, 66448948), (20, 33224474), (40, 16612237), (2381, 279080), (4762, 139540), (6977, 95240), (9524, 69770), (11905, 55816), (13954, 47620), (19048, 34885), (23810, 27908)]