21660993

素因数分解:

$3^3\times {\mathrm{127}}^1\times {\mathrm{6317}}^1$

素因数の和:6453

約数の個数: 16

約数和(自身を含む): 32348160

約数和(自身を除く): 10687167

約数列:

[1, 3, 9, 27, 127, 381, 1143, 3429, 6317, 18951, 56853, 170559, 802259, 2406777, 7220331, 21660993]

約数ペア:

[(1, 21660993), (3, 7220331), (9, 2406777), (27, 802259), (127, 170559), (381, 56853), (1143, 18951), (3429, 6317)]