20389525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1459}}^1$

素因数の和:1525

約数の個数: 24

約数和(自身を含む): 27880160

約数和(自身を除く): 7490635

約数列:

[1, 5, 13, 25, 43, 65, 215, 325, 559, 1075, 1459, 2795, 7295, 13975, 18967, 36475, 62737, 94835, 313685, 474175, 815581, 1568425, 4077905, 20389525]

約数ペア:

[(1, 20389525), (5, 4077905), (13, 1568425), (25, 815581), (43, 474175), (65, 313685), (215, 94835), (325, 62737), (559, 36475), (1075, 18967), (1459, 13975), (2795, 7295)]