21718870

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{953}}^1$

素因数の和:1056

約数の個数: 32

約数和(自身を含む): 40800672

約数和(自身を除く): 19081802

約数列:

[1, 2, 5, 10, 43, 53, 86, 106, 215, 265, 430, 530, 953, 1906, 2279, 4558, 4765, 9530, 11395, 22790, 40979, 50509, 81958, 101018, 204895, 252545, 409790, 505090, 2171887, 4343774, 10859435, 21718870]

約数ペア:

[(1, 21718870), (2, 10859435), (5, 4343774), (10, 2171887), (43, 505090), (53, 409790), (86, 252545), (106, 204895), (215, 101018), (265, 81958), (430, 50509), (530, 40979), (953, 22790), (1906, 11395), (2279, 9530), (4558, 4765)]