405162820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{494101}}^1$

素因数の和:494151

約数の個数: 24

約数和(自身を含む): 871595928

約数和(自身を除く): 466433108

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 494101, 988202, 1976404, 2470505, 4941010, 9882020, 20258141, 40516282, 81032564, 101290705, 202581410, 405162820]

約数ペア:

[(1, 405162820), (2, 202581410), (4, 101290705), (5, 81032564), (10, 40516282), (20, 20258141), (41, 9882020), (82, 4941010), (164, 2470505), (205, 1976404), (410, 988202), (820, 494101)]