21177783

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19447}}^1$

素因数の和:19475

約数の個数: 18

約数和(自身を含む): 33625592

約数和(自身を除く): 12447809

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 19447, 58341, 175023, 213917, 641751, 1925253, 2353087, 7059261, 21177783]

約数ペア:

[(1, 21177783), (3, 7059261), (9, 2353087), (11, 1925253), (33, 641751), (99, 213917), (121, 175023), (363, 58341), (1089, 19447)]