21003225

素因数分解:

$3^1\times 5^2\times {\mathrm{193}}^1\times {\mathrm{1451}}^1$

素因数の和:1657

約数の個数: 24

約数和(自身を含む): 34929312

約数和(自身を除く): 13926087

約数列:

[1, 3, 5, 15, 25, 75, 193, 579, 965, 1451, 2895, 4353, 4825, 7255, 14475, 21765, 36275, 108825, 280043, 840129, 1400215, 4200645, 7001075, 21003225]

約数ペア:

[(1, 21003225), (3, 7001075), (5, 4200645), (15, 1400215), (25, 840129), (75, 280043), (193, 108825), (579, 36275), (965, 21765), (1451, 14475), (2895, 7255), (4353, 4825)]