19980045

素因数分解:

$3^2\times 5^1\times {\mathrm{444001}}^1$

素因数の和:444012

約数の個数: 12

約数和(自身を含む): 34632156

約数和(自身を除く): 14652111

約数列:

[1, 3, 5, 9, 15, 45, 444001, 1332003, 2220005, 3996009, 6660015, 19980045]

約数ペア:

[(1, 19980045), (3, 6660015), (5, 3996009), (9, 2220005), (15, 1332003), (45, 444001)]