21218078

素因数分解:

$2^1\times 7^2\times {\mathrm{317}}^1\times {\mathrm{683}}^1$

素因数の和:1016

約数の個数: 24

約数和(自身を含む): 37194552

約数和(自身を除く): 15976474

約数列:

[1, 2, 7, 14, 49, 98, 317, 634, 683, 1366, 2219, 4438, 4781, 9562, 15533, 31066, 33467, 66934, 216511, 433022, 1515577, 3031154, 10609039, 21218078]

約数ペア:

[(1, 21218078), (2, 10609039), (7, 3031154), (14, 1515577), (49, 433022), (98, 216511), (317, 66934), (634, 33467), (683, 31066), (1366, 15533), (2219, 9562), (4438, 4781)]