4978025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1$

素因数の和:110

約数の個数: 36

約数和(自身を含む): 7194852

約数和(自身を除く): 2216827

約数列:

[1, 5, 13, 17, 25, 53, 65, 85, 221, 265, 289, 325, 425, 689, 901, 1105, 1325, 1445, 3445, 3757, 4505, 5525, 7225, 11713, 15317, 17225, 18785, 22525, 58565, 76585, 93925, 199121, 292825, 382925, 995605, 4978025]

約数ペア:

[(1, 4978025), (5, 995605), (13, 382925), (17, 292825), (25, 199121), (53, 93925), (65, 76585), (85, 58565), (221, 22525), (265, 18785), (289, 17225), (325, 15317), (425, 11713), (689, 7225), (901, 5525), (1105, 4505), (1325, 3757), (1445, 3445)]