21489225

素因数分解:

$3^1\times 5^2\times {\mathrm{181}}^1\times {\mathrm{1583}}^1$

素因数の和:1777

約数の個数: 24

約数和(自身を含む): 35747712

約数和(自身を除く): 14258487

約数列:

[1, 3, 5, 15, 25, 75, 181, 543, 905, 1583, 2715, 4525, 4749, 7915, 13575, 23745, 39575, 118725, 286523, 859569, 1432615, 4297845, 7163075, 21489225]

約数ペア:

[(1, 21489225), (3, 7163075), (5, 4297845), (15, 1432615), (25, 859569), (75, 286523), (181, 118725), (543, 39575), (905, 23745), (1583, 13575), (2715, 7915), (4525, 4749)]