257530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{283}}^1$

素因数の和:310

約数の個数: 32

約数和(自身を含む): 572544

約数和(自身を除く): 315014

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 283, 455, 566, 910, 1415, 1981, 2830, 3679, 3962, 7358, 9905, 18395, 19810, 25753, 36790, 51506, 128765, 257530]

約数ペア:

[(1, 257530), (2, 128765), (5, 51506), (7, 36790), (10, 25753), (13, 19810), (14, 18395), (26, 9905), (35, 7358), (65, 3962), (70, 3679), (91, 2830), (130, 1981), (182, 1415), (283, 910), (455, 566)]