408020848

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{621983}}^1$

素因数の和:622032

約数の個数: 20

約数和(自身を含む): 809823168

約数和(自身を除く): 401802320

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 621983, 1243966, 2487932, 4975864, 9951728, 25501303, 51002606, 102005212, 204010424, 408020848]

約数ペア:

[(1, 408020848), (2, 204010424), (4, 102005212), (8, 51002606), (16, 25501303), (41, 9951728), (82, 4975864), (164, 2487932), (328, 1243966), (656, 621983)]