19568225

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:329

約数の個数: 24

約数和(自身を含む): 25206720

約数和(自身を除く): 5638495

約数列:

[1, 5, 25, 43, 109, 167, 215, 545, 835, 1075, 2725, 4175, 4687, 7181, 18203, 23435, 35905, 91015, 117175, 179525, 455075, 782729, 3913645, 19568225]

約数ペア:

[(1, 19568225), (5, 3913645), (25, 782729), (43, 455075), (109, 179525), (167, 117175), (215, 91015), (545, 35905), (835, 23435), (1075, 18203), (2725, 7181), (4175, 4687)]