221520999

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{620507}}^1$

素因数の和:620534

約数の個数: 16

約数和(自身を含む): 357412608

約数和(自身を除く): 135891609

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 620507, 1861521, 4343549, 10548619, 13030647, 31645857, 73840333, 221520999]

約数ペア:

[(1, 221520999), (3, 73840333), (7, 31645857), (17, 13030647), (21, 10548619), (51, 4343549), (119, 1861521), (357, 620507)]