21764020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{25307}}^1$

素因数の和:25359

約数の個数: 24

約数和(自身を含む): 46769184

約数和(自身を除く): 25005164

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 25307, 50614, 101228, 126535, 253070, 506140, 1088201, 2176402, 4352804, 5441005, 10882010, 21764020]

約数ペア:

[(1, 21764020), (2, 10882010), (4, 5441005), (5, 4352804), (10, 2176402), (20, 1088201), (43, 506140), (86, 253070), (172, 126535), (215, 101228), (430, 50614), (860, 25307)]