18900045

素因数分解:

$3^2\times 5^1\times {\mathrm{420001}}^1$

素因数の和:420012

約数の個数: 12

約数和(自身を含む): 32760156

約数和(自身を除く): 13860111

約数列:

[1, 3, 5, 9, 15, 45, 420001, 1260003, 2100005, 3780009, 6300015, 18900045]

約数ペア:

[(1, 18900045), (3, 6300015), (5, 3780009), (9, 2100005), (15, 1260003), (45, 420001)]