21302908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7937}}^1$

素因数の和:8013

約数の個数: 24

約数和(自身を含む): 41341104

約数和(自身を除く): 20038196

約数列:

[1, 2, 4, 11, 22, 44, 61, 122, 244, 671, 1342, 2684, 7937, 15874, 31748, 87307, 174614, 349228, 484157, 968314, 1936628, 5325727, 10651454, 21302908]

約数ペア:

[(1, 21302908), (2, 10651454), (4, 5325727), (11, 1936628), (22, 968314), (44, 484157), (61, 349228), (122, 174614), (244, 87307), (671, 31748), (1342, 15874), (2684, 7937)]