21457825

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1741}}^1$

素因数の和:1797

約数の個数: 24

約数和(自身を含む): 29161080

約数和(自身を除く): 7703255

約数列:

[1, 5, 17, 25, 29, 85, 145, 425, 493, 725, 1741, 2465, 8705, 12325, 29597, 43525, 50489, 147985, 252445, 739925, 858313, 1262225, 4291565, 21457825]

約数ペア:

[(1, 21457825), (5, 4291565), (17, 1262225), (25, 858313), (29, 739925), (85, 252445), (145, 147985), (425, 50489), (493, 43525), (725, 29597), (1741, 12325), (2465, 8705)]