420975

素因数分解:

$3^2\times 5^2\times {\mathrm{1871}}^1$

素因数の和:1887

約数の個数: 18

約数和(自身を含む): 754416

約数和(自身を除く): 333441

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 1871, 5613, 9355, 16839, 28065, 46775, 84195, 140325, 420975]

約数ペア:

[(1, 420975), (3, 140325), (5, 84195), (9, 46775), (15, 28065), (25, 16839), (45, 9355), (75, 5613), (225, 1871)]