257213918

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{24919}}^1$

素因数の和:25331

約数の個数: 16

約数和(自身を含む): 416562720

約数和(自身を除く): 159348802

約数列:

[1, 2, 13, 26, 397, 794, 5161, 10322, 24919, 49838, 323947, 647894, 9892843, 19785686, 128606959, 257213918]

約数ペア:

[(1, 257213918), (2, 128606959), (13, 19785686), (26, 9892843), (397, 647894), (794, 323947), (5161, 49838), (10322, 24919)]