21344816

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12239}}^1$

素因数の和:12356

約数の個数: 20

約数和(自身を含む): 41738400

約数和(自身を除く): 20393584

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12239, 24478, 48956, 97912, 195824, 1334051, 2668102, 5336204, 10672408, 21344816]

約数ペア:

[(1, 21344816), (2, 10672408), (4, 5336204), (8, 2668102), (16, 1334051), (109, 195824), (218, 97912), (436, 48956), (872, 24478), (1744, 12239)]