638224

素因数分解:

$2^4\times {\mathrm{113}}^1\times {\mathrm{353}}^1$

素因数の和:474

約数の個数: 20

約数和(自身を含む): 1251036

約数和(自身を除く): 612812

約数列:

[1, 2, 4, 8, 16, 113, 226, 353, 452, 706, 904, 1412, 1808, 2824, 5648, 39889, 79778, 159556, 319112, 638224]

約数ペア:

[(1, 638224), (2, 319112), (4, 159556), (8, 79778), (16, 39889), (113, 5648), (226, 2824), (353, 1808), (452, 1412), (706, 904)]