420139792

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{640457}}^1$

素因数の和:640506

約数の個数: 20

約数和(自身を含む): 833876316

約数和(自身を除く): 413736524

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 640457, 1280914, 2561828, 5123656, 10247312, 26258737, 52517474, 105034948, 210069896, 420139792]

約数ペア:

[(1, 420139792), (2, 210069896), (4, 105034948), (8, 52517474), (16, 26258737), (41, 10247312), (82, 5123656), (164, 2561828), (328, 1280914), (656, 640457)]