18715866

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{239947}}^1$

素因数の和:239965

約数の個数: 16

約数和(自身を含む): 40311264

約数和(自身を除く): 21595398

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 239947, 479894, 719841, 1439682, 3119311, 6238622, 9357933, 18715866]

約数ペア:

[(1, 18715866), (2, 9357933), (3, 6238622), (6, 3119311), (13, 1439682), (26, 719841), (39, 479894), (78, 239947)]