20528105

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{1009}}^1$

素因数の和:1340

約数の個数: 16

約数和(自身を含む): 26639760

約数和(自身を除く): 6111655

約数列:

[1, 5, 13, 65, 313, 1009, 1565, 4069, 5045, 13117, 20345, 65585, 315817, 1579085, 4105621, 20528105]

約数ペア:

[(1, 20528105), (5, 4105621), (13, 1579085), (65, 315817), (313, 65585), (1009, 20345), (1565, 13117), (4069, 5045)]