21256125

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{5153}}^1$

素因数の和:5182

約数の個数: 32

約数和(自身を含む): 38593152

約数和(自身を除く): 17337027

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 125, 165, 275, 375, 825, 1375, 4125, 5153, 15459, 25765, 56683, 77295, 128825, 170049, 283415, 386475, 644125, 850245, 1417075, 1932375, 4251225, 7085375, 21256125]

約数ペア:

[(1, 21256125), (3, 7085375), (5, 4251225), (11, 1932375), (15, 1417075), (25, 850245), (33, 644125), (55, 386475), (75, 283415), (125, 170049), (165, 128825), (275, 77295), (375, 56683), (825, 25765), (1375, 15459), (4125, 5153)]