20801276

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{4639}}^1$

素因数の和:4721

約数の個数: 24

約数和(自身を含む): 38976000

約数和(自身を除く): 18174724

約数列:

[1, 2, 4, 19, 38, 59, 76, 118, 236, 1121, 2242, 4484, 4639, 9278, 18556, 88141, 176282, 273701, 352564, 547402, 1094804, 5200319, 10400638, 20801276]

約数ペア:

[(1, 20801276), (2, 10400638), (4, 5200319), (19, 1094804), (38, 547402), (59, 352564), (76, 273701), (118, 176282), (236, 88141), (1121, 18556), (2242, 9278), (4484, 4639)]