21440524

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12553}}^1$

素因数の和:12625

約数の個数: 24

約数和(自身を含む): 43587488

約数和(自身を除く): 22146964

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12553, 25106, 50212, 87871, 175742, 351484, 765733, 1531466, 3062932, 5360131, 10720262, 21440524]

約数ペア:

[(1, 21440524), (2, 10720262), (4, 5360131), (7, 3062932), (14, 1531466), (28, 765733), (61, 351484), (122, 175742), (244, 87871), (427, 50212), (854, 25106), (1708, 12553)]