20993349

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{881}}^1$

素因数の和:957

約数の個数: 24

約数和(自身を含む): 30989952

約数和(自身を除く): 9996603

約数列:

[1, 3, 13, 39, 47, 141, 169, 507, 611, 881, 1833, 2643, 7943, 11453, 23829, 34359, 41407, 124221, 148889, 446667, 538291, 1614873, 6997783, 20993349]

約数ペア:

[(1, 20993349), (3, 6997783), (13, 1614873), (39, 538291), (47, 446667), (141, 148889), (169, 124221), (507, 41407), (611, 34359), (881, 23829), (1833, 11453), (2643, 7943)]