389615620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{475141}}^1$

素因数の和:475191

約数の個数: 24

約数和(自身を含む): 838150488

約数和(自身を除く): 448534868

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 475141, 950282, 1900564, 2375705, 4751410, 9502820, 19480781, 38961562, 77923124, 97403905, 194807810, 389615620]

約数ペア:

[(1, 389615620), (2, 194807810), (4, 97403905), (5, 77923124), (10, 38961562), (20, 19480781), (41, 9502820), (82, 4751410), (164, 2375705), (205, 1900564), (410, 950282), (820, 475141)]