257319025

素因数分解:

$5^2\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{1061}}^1$

素因数の和:1269

約数の個数: 24

約数和(自身を含む): 325927800

約数和(自身を除く): 68608775

約数列:

[1, 5, 25, 89, 109, 445, 545, 1061, 2225, 2725, 5305, 9701, 26525, 48505, 94429, 115649, 242525, 472145, 578245, 2360725, 2891225, 10292761, 51463805, 257319025]

約数ペア:

[(1, 257319025), (5, 51463805), (25, 10292761), (89, 2891225), (109, 2360725), (445, 578245), (545, 472145), (1061, 242525), (2225, 115649), (2725, 94429), (5305, 48505), (9701, 26525)]