21136484

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{359}}^2$

素因数の和:763

約数の個数: 18

約数和(自身を含む): 37996854

約数和(自身を除く): 16860370

約数列:

[1, 2, 4, 41, 82, 164, 359, 718, 1436, 14719, 29438, 58876, 128881, 257762, 515524, 5284121, 10568242, 21136484]

約数ペア:

[(1, 21136484), (2, 10568242), (4, 5284121), (41, 515524), (82, 257762), (164, 128881), (359, 58876), (718, 29438), (1436, 14719)]