21666909

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{419}}^1\times {\mathrm{1567}}^1$

素因数の和:2000

約数の個数: 16

約数和(自身を含む): 31610880

約数和(自身を除く): 9943971

約数列:

[1, 3, 11, 33, 419, 1257, 1567, 4609, 4701, 13827, 17237, 51711, 656573, 1969719, 7222303, 21666909]

約数ペア:

[(1, 21666909), (3, 7222303), (11, 1969719), (33, 656573), (419, 51711), (1257, 17237), (1567, 13827), (4609, 4701)]