80628985

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1\times {\mathrm{809}}^1$

素因数の和:1488

約数の個数: 16

約数和(自身を含む): 100154880

約数和(自身を除く): 19525895

約数列:

[1, 5, 31, 155, 643, 809, 3215, 4045, 19933, 25079, 99665, 125395, 520187, 2600935, 16125797, 80628985]

約数ペア:

[(1, 80628985), (5, 16125797), (31, 2600935), (155, 520187), (643, 125395), (809, 99665), (3215, 25079), (4045, 19933)]