638181825

素因数分解:

$3^1\times 5^2\times {\mathrm{8509091}}^1$

素因数の和:8509104

約数の個数: 12

約数和(自身を含む): 1055127408

約数和(自身を除く): 416945583

約数列:

[1, 3, 5, 15, 25, 75, 8509091, 25527273, 42545455, 127636365, 212727275, 638181825]

約数ペア:

[(1, 638181825), (3, 212727275), (5, 127636365), (15, 42545455), (25, 25527273), (75, 8509091)]