644848

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{983}}^1$

素因数の和:1032

約数の個数: 20

約数和(自身を含む): 1281168

約数和(自身を除く): 636320

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 983, 1966, 3932, 7864, 15728, 40303, 80606, 161212, 322424, 644848]

約数ペア:

[(1, 644848), (2, 322424), (4, 161212), (8, 80606), (16, 40303), (41, 15728), (82, 7864), (164, 3932), (328, 1966), (656, 983)]