20178951

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{1229}}^1$

素因数の和:1666

約数の個数: 16

約数和(自身を含む): 29067360

約数和(自身を除く): 8888409

約数列:

[1, 3, 13, 39, 421, 1229, 1263, 3687, 5473, 15977, 16419, 47931, 517409, 1552227, 6726317, 20178951]

約数ペア:

[(1, 20178951), (3, 6726317), (13, 1552227), (39, 517409), (421, 47931), (1229, 16419), (1263, 15977), (3687, 5473)]