18713825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{811}}^1$

素因数の和:905

約数の個数: 24

約数和(自身を含む): 25373376

約数和(自身を除く): 6659551

約数列:

[1, 5, 13, 25, 65, 71, 325, 355, 811, 923, 1775, 4055, 4615, 10543, 20275, 23075, 52715, 57581, 263575, 287905, 748553, 1439525, 3742765, 18713825]

約数ペア:

[(1, 18713825), (5, 3742765), (13, 1439525), (25, 748553), (65, 287905), (71, 263575), (325, 57581), (355, 52715), (811, 23075), (923, 20275), (1775, 10543), (4055, 4615)]