15990225

素因数分解:

$3^1\times 5^2\times {\mathrm{213203}}^1$

素因数の和:213216

約数の個数: 12

約数和(自身を含む): 26437296

約数和(自身を除く): 10447071

約数列:

[1, 3, 5, 15, 25, 75, 213203, 639609, 1066015, 3198045, 5330075, 15990225]

約数ペア:

[(1, 15990225), (3, 5330075), (5, 3198045), (15, 1066015), (25, 639609), (75, 213203)]