21283725

素因数分解:

$3^1\times 5^2\times {\mathrm{163}}^1\times {\mathrm{1741}}^1$

素因数の和:1917

約数の個数: 24

約数和(自身を含む): 35425312

約数和(自身を除く): 14141587

約数列:

[1, 3, 5, 15, 25, 75, 163, 489, 815, 1741, 2445, 4075, 5223, 8705, 12225, 26115, 43525, 130575, 283783, 851349, 1418915, 4256745, 7094575, 21283725]

約数ペア:

[(1, 21283725), (3, 7094575), (5, 4256745), (15, 1418915), (25, 851349), (75, 283783), (163, 130575), (489, 43525), (815, 26115), (1741, 12225), (2445, 8705), (4075, 5223)]