21991772

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{701}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 45287424

約数和(自身を除く): 23295652

約数列:

[1, 2, 4, 11, 22, 23, 31, 44, 46, 62, 92, 124, 253, 341, 506, 682, 701, 713, 1012, 1364, 1402, 1426, 2804, 2852, 7711, 7843, 15422, 15686, 16123, 21731, 30844, 31372, 32246, 43462, 64492, 86924, 177353, 239041, 354706, 478082, 499813, 709412, 956164, 999626, 1999252, 5497943, 10995886, 21991772]

約数ペア:

[(1, 21991772), (2, 10995886), (4, 5497943), (11, 1999252), (22, 999626), (23, 956164), (31, 709412), (44, 499813), (46, 478082), (62, 354706), (92, 239041), (124, 177353), (253, 86924), (341, 64492), (506, 43462), (682, 32246), (701, 31372), (713, 30844), (1012, 21731), (1364, 16123), (1402, 15686), (1426, 15422), (2804, 7843), (2852, 7711)]