20748580

素因数分解:

$2^2\times 5^1\times {\mathrm{727}}^1\times {\mathrm{1427}}^1$

素因数の和:2163

約数の個数: 24

約数和(自身を含む): 43662528

約数和(自身を除く): 22913948

約数列:

[1, 2, 4, 5, 10, 20, 727, 1427, 1454, 2854, 2908, 3635, 5708, 7135, 7270, 14270, 14540, 28540, 1037429, 2074858, 4149716, 5187145, 10374290, 20748580]

約数ペア:

[(1, 20748580), (2, 10374290), (4, 5187145), (5, 4149716), (10, 2074858), (20, 1037429), (727, 28540), (1427, 14540), (1454, 14270), (2854, 7270), (2908, 7135), (3635, 5708)]