21088425

素因数分解:

$3^1\times 5^2\times {\mathrm{317}}^1\times {\mathrm{887}}^1$

素因数の和:1217

約数の個数: 24

約数和(自身を含む): 35015616

約数和(自身を除く): 13927191

約数列:

[1, 3, 5, 15, 25, 75, 317, 887, 951, 1585, 2661, 4435, 4755, 7925, 13305, 22175, 23775, 66525, 281179, 843537, 1405895, 4217685, 7029475, 21088425]

約数ペア:

[(1, 21088425), (3, 7029475), (5, 4217685), (15, 1405895), (25, 843537), (75, 281179), (317, 66525), (887, 23775), (951, 22175), (1585, 13305), (2661, 7925), (4435, 4755)]