21355227

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:503

約数の個数: 24

約数和(自身を含む): 31711680

約数和(自身を除く): 10356453

約数列:

[1, 3, 9, 59, 131, 177, 307, 393, 531, 921, 1179, 2763, 7729, 18113, 23187, 40217, 54339, 69561, 120651, 163017, 361953, 2372803, 7118409, 21355227]

約数ペア:

[(1, 21355227), (3, 7118409), (9, 2372803), (59, 361953), (131, 163017), (177, 120651), (307, 69561), (393, 54339), (531, 40217), (921, 23187), (1179, 18113), (2763, 7729)]