21648339

素因数分解:

$3^2\times {\mathrm{59}}^2\times {\mathrm{691}}^1$

素因数の和:815

約数の個数: 18

約数和(自身を含む): 31854836

約数和(自身を除く): 10206497

約数列:

[1, 3, 9, 59, 177, 531, 691, 2073, 3481, 6219, 10443, 31329, 40769, 122307, 366921, 2405371, 7216113, 21648339]

約数ペア:

[(1, 21648339), (3, 7216113), (9, 2405371), (59, 366921), (177, 122307), (531, 40769), (691, 31329), (2073, 10443), (3481, 6219)]