21208759

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:271

約数の個数: 24

約数和(自身を含む): 25546640

約数和(自身を除く): 4337881

約数列:

[1, 11, 13, 97, 121, 139, 143, 1067, 1261, 1529, 1573, 1807, 11737, 13483, 13871, 16819, 19877, 148313, 152581, 175279, 218647, 1631443, 1928069, 21208759]

約数ペア:

[(1, 21208759), (11, 1928069), (13, 1631443), (97, 218647), (121, 175279), (139, 152581), (143, 148313), (1067, 19877), (1261, 16819), (1529, 13871), (1573, 13483), (1807, 11737)]