21145025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4523}}^1$

素因数の和:4561

約数の個数: 24

約数和(自身を含む): 30292704

約数和(自身を除く): 9147679

約数列:

[1, 5, 11, 17, 25, 55, 85, 187, 275, 425, 935, 4523, 4675, 22615, 49753, 76891, 113075, 248765, 384455, 845801, 1243825, 1922275, 4229005, 21145025]

約数ペア:

[(1, 21145025), (5, 4229005), (11, 1922275), (17, 1243825), (25, 845801), (55, 384455), (85, 248765), (187, 113075), (275, 76891), (425, 49753), (935, 22615), (4523, 4675)]