20945221

素因数分解:

${\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:225

約数の個数: 24

約数和(自身を含む): 24514560

約数和(自身を除く): 3569339

約数列:

[1, 11, 29, 47, 121, 127, 319, 517, 1363, 1397, 3509, 3683, 5687, 5969, 14993, 15367, 40513, 65659, 164923, 173101, 445643, 722249, 1904111, 20945221]

約数ペア:

[(1, 20945221), (11, 1904111), (29, 722249), (47, 445643), (121, 173101), (127, 164923), (319, 65659), (517, 40513), (1363, 15367), (1397, 14993), (3509, 5969), (3683, 5687)]