81675675

素因数分解:

$3^3\times 5^2\times {\mathrm{121001}}^1$

素因数の和:121020

約数の個数: 24

約数和(自身を含む): 150042480

約数和(自身を除く): 68366805

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 121001, 363003, 605005, 1089009, 1815015, 3025025, 3267027, 5445045, 9075075, 16335135, 27225225, 81675675]

約数ペア:

[(1, 81675675), (3, 27225225), (5, 16335135), (9, 9075075), (15, 5445045), (25, 3267027), (27, 3025025), (45, 1815015), (75, 1089009), (135, 605005), (225, 363003), (675, 121001)]