21145674

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{320389}}^1$

素因数の和:320405

約数の個数: 16

約数和(自身を含む): 46136160

約数和(自身を除く): 24990486

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 320389, 640778, 961167, 1922334, 3524279, 7048558, 10572837, 21145674]

約数ペア:

[(1, 21145674), (2, 10572837), (3, 7048558), (6, 3524279), (11, 1922334), (22, 961167), (33, 640778), (66, 320389)]