420188336

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{640531}}^1$

素因数の和:640580

約数の個数: 20

約数和(自身を含む): 833972664

約数和(自身を除く): 413784328

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 640531, 1281062, 2562124, 5124248, 10248496, 26261771, 52523542, 105047084, 210094168, 420188336]

約数ペア:

[(1, 420188336), (2, 210094168), (4, 105047084), (8, 52523542), (16, 26261771), (41, 10248496), (82, 5124248), (164, 2562124), (328, 1281062), (656, 640531)]