721125

素因数分解:

$3^2\times 5^3\times {\mathrm{641}}^1$

素因数の和:662

約数の個数: 24

約数和(自身を含む): 1301976

約数和(自身を除く): 580851

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 641, 1125, 1923, 3205, 5769, 9615, 16025, 28845, 48075, 80125, 144225, 240375, 721125]

約数ペア:

[(1, 721125), (3, 240375), (5, 144225), (9, 80125), (15, 48075), (25, 28845), (45, 16025), (75, 9615), (125, 5769), (225, 3205), (375, 1923), (641, 1125)]