65987875

素因数分解:

$5^3\times {\mathrm{643}}^1\times {\mathrm{821}}^1$

素因数の和:1479

約数の個数: 16

約数和(自身を含む): 82581408

約数和(自身を除く): 16593533

約数列:

[1, 5, 25, 125, 643, 821, 3215, 4105, 16075, 20525, 80375, 102625, 527903, 2639515, 13197575, 65987875]

約数ペア:

[(1, 65987875), (5, 13197575), (25, 2639515), (125, 527903), (643, 102625), (821, 80375), (3215, 20525), (4105, 16075)]