21222747

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25913}}^1$

素因数の和:25939

約数の個数: 24

約数和(自身を含む): 37730784

約数和(自身を除く): 16508037

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25913, 77739, 181391, 233217, 336869, 544173, 1010607, 1632519, 2358083, 3031821, 7074249, 21222747]

約数ペア:

[(1, 21222747), (3, 7074249), (7, 3031821), (9, 2358083), (13, 1632519), (21, 1010607), (39, 544173), (63, 336869), (91, 233217), (117, 181391), (273, 77739), (819, 25913)]