90868825

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{12577}}^1$

素因数の和:12621

約数の個数: 18

約数和(自身を含む): 119704826

約数和(自身を除く): 28836001

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 7225, 12577, 62885, 213809, 314425, 1069045, 3634753, 5345225, 18173765, 90868825]

約数ペア:

[(1, 90868825), (5, 18173765), (17, 5345225), (25, 3634753), (85, 1069045), (289, 314425), (425, 213809), (1445, 62885), (7225, 12577)]