64665575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{198971}}^1$

素因数の和:198994

約数の個数: 12

約数和(自身を含む): 86353848

約数和(自身を除く): 21688273

約数列:

[1, 5, 13, 25, 65, 325, 198971, 994855, 2586623, 4974275, 12933115, 64665575]

約数ペア:

[(1, 64665575), (5, 12933115), (13, 4974275), (25, 2586623), (65, 994855), (325, 198971)]