21688953

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{3889}}^1$

素因数の和:3929

約数の個数: 24

約数和(自身を含む): 34169760

約数和(自身を除く): 12480807

約数列:

[1, 3, 11, 13, 33, 39, 143, 169, 429, 507, 1859, 3889, 5577, 11667, 42779, 50557, 128337, 151671, 556127, 657241, 1668381, 1971723, 7229651, 21688953]

約数ペア:

[(1, 21688953), (3, 7229651), (11, 1971723), (13, 1668381), (33, 657241), (39, 556127), (143, 151671), (169, 128337), (429, 50557), (507, 42779), (1859, 11667), (3889, 5577)]