20878665

素因数分解:

$3^1\times 5^1\times {\mathrm{313}}^1\times {\mathrm{4447}}^1$

素因数の和:4768

約数の個数: 16

約数和(自身を含む): 33520128

約数和(自身を除く): 12641463

約数列:

[1, 3, 5, 15, 313, 939, 1565, 4447, 4695, 13341, 22235, 66705, 1391911, 4175733, 6959555, 20878665]

約数ペア:

[(1, 20878665), (3, 6959555), (5, 4175733), (15, 1391911), (313, 66705), (939, 22235), (1565, 13341), (4447, 4695)]