21568025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:529

約数の個数: 24

約数和(自身を含む): 28123200

約数和(自身を除く): 6555175

約数列:

[1, 5, 25, 29, 71, 145, 355, 419, 725, 1775, 2059, 2095, 10295, 10475, 12151, 29749, 51475, 60755, 148745, 303775, 743725, 862721, 4313605, 21568025]

約数ペア:

[(1, 21568025), (5, 4313605), (25, 862721), (29, 743725), (71, 303775), (145, 148745), (355, 60755), (419, 51475), (725, 29749), (1775, 12151), (2059, 10475), (2095, 10295)]