20780046721

素因数分解:

$7^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1\times {\mathrm{123449}}^1$

素因数の和:123768

約数の個数: 16

約数和(自身を含む): 24057936000

約数和(自身を除く): 3277889279

約数列:

[1, 7, 139, 173, 973, 1211, 24047, 123449, 168329, 864143, 17159411, 21356677, 120115877, 149496739, 2968578103, 20780046721]

約数ペア:

[(1, 20780046721), (7, 2968578103), (139, 149496739), (173, 120115877), (973, 21356677), (1211, 17159411), (24047, 864143), (123449, 168329)]