21964640

素因数分解:

$2^5\times 5^1\times {\mathrm{137279}}^1$

素因数の和:137294

約数の個数: 24

約数和(自身を含む): 51891840

約数和(自身を除く): 29927200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 137279, 274558, 549116, 686395, 1098232, 1372790, 2196464, 2745580, 4392928, 5491160, 10982320, 21964640]

約数ペア:

[(1, 21964640), (2, 10982320), (4, 5491160), (5, 4392928), (8, 2745580), (10, 2196464), (16, 1372790), (20, 1098232), (32, 686395), (40, 549116), (80, 274558), (160, 137279)]