289703043

素因数分解:

$3^2\times 7^2\times {\mathrm{656923}}^1$

素因数の和:656943

約数の個数: 18

約数和(自身を含む): 486780684

約数和(自身を除く): 197077641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 656923, 1970769, 4598461, 5912307, 13795383, 32189227, 41386149, 96567681, 289703043]

約数ペア:

[(1, 289703043), (3, 96567681), (7, 41386149), (9, 32189227), (21, 13795383), (49, 5912307), (63, 4598461), (147, 1970769), (441, 656923)]