21085043

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{353}}^1$

素因数の和:443

約数の個数: 24

約数和(自身を含む): 26150688

約数和(自身を除く): 5065645

約数列:

[1, 7, 23, 49, 53, 161, 353, 371, 1127, 1219, 2471, 2597, 8119, 8533, 17297, 18709, 56833, 59731, 130963, 397831, 430307, 916741, 3012149, 21085043]

約数ペア:

[(1, 21085043), (7, 3012149), (23, 916741), (49, 430307), (53, 397831), (161, 130963), (353, 59731), (371, 56833), (1127, 18709), (1219, 17297), (2471, 8533), (2597, 8119)]