21899669

素因数分解:

${\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{79}}^2$

素因数の和:209

約数の個数: 18

約数和(自身を含む): 25220790

約数和(自身を除く): 3321121

約数列:

[1, 11, 29, 79, 121, 319, 869, 2291, 3509, 6241, 9559, 25201, 68651, 180989, 277211, 755161, 1990879, 21899669]

約数ペア:

[(1, 21899669), (11, 1990879), (29, 755161), (79, 277211), (121, 180989), (319, 68651), (869, 25201), (2291, 9559), (3509, 6241)]