20858655

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{443}}^1$

素因数の和:567

約数の個数: 32

約数和(自身を含む): 34695936

約数和(自身を除く): 13837281

約数列:

[1, 3, 5, 15, 43, 73, 129, 215, 219, 365, 443, 645, 1095, 1329, 2215, 3139, 6645, 9417, 15695, 19049, 32339, 47085, 57147, 95245, 97017, 161695, 285735, 485085, 1390577, 4171731, 6952885, 20858655]

約数ペア:

[(1, 20858655), (3, 6952885), (5, 4171731), (15, 1390577), (43, 485085), (73, 285735), (129, 161695), (215, 97017), (219, 95245), (365, 57147), (443, 47085), (645, 32339), (1095, 19049), (1329, 15695), (2215, 9417), (3139, 6645)]