2790981

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:265

約数の個数: 24

約数和(自身を含む): 4280640

約数和(自身を除く): 1489659

約数列:

[1, 3, 9, 23, 69, 97, 139, 207, 291, 417, 873, 1251, 2231, 3197, 6693, 9591, 13483, 20079, 28773, 40449, 121347, 310109, 930327, 2790981]

約数ペア:

[(1, 2790981), (3, 930327), (9, 310109), (23, 121347), (69, 40449), (97, 28773), (139, 20079), (207, 13483), (291, 9591), (417, 6693), (873, 3197), (1251, 2231)]