21699375

素因数分解:

$3^1\times 5^4\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:257

約数の個数: 40

約数和(自身を含む): 36888192

約数和(自身を除く): 15188817

約数列:

[1, 3, 5, 15, 25, 71, 75, 125, 163, 213, 355, 375, 489, 625, 815, 1065, 1775, 1875, 2445, 4075, 5325, 8875, 11573, 12225, 20375, 26625, 34719, 44375, 57865, 61125, 101875, 133125, 173595, 289325, 305625, 867975, 1446625, 4339875, 7233125, 21699375]

約数ペア:

[(1, 21699375), (3, 7233125), (5, 4339875), (15, 1446625), (25, 867975), (71, 305625), (75, 289325), (125, 173595), (163, 133125), (213, 101875), (355, 61125), (375, 57865), (489, 44375), (625, 34719), (815, 26625), (1065, 20375), (1775, 12225), (1875, 11573), (2445, 8875), (4075, 5325)]