21760580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{25303}}^1$

素因数の和:25355

約数の個数: 24

約数和(自身を含む): 46761792

約数和(自身を除く): 25001212

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 25303, 50606, 101212, 126515, 253030, 506060, 1088029, 2176058, 4352116, 5440145, 10880290, 21760580]

約数ペア:

[(1, 21760580), (2, 10880290), (4, 5440145), (5, 4352116), (10, 2176058), (20, 1088029), (43, 506060), (86, 253030), (172, 126515), (215, 101212), (430, 50606), (860, 25303)]