18517989

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{46411}}^1$

素因数の和:46440

約数の個数: 16

約数和(自身を含む): 29703680

約数和(自身を除く): 11185691

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 46411, 139233, 324877, 881809, 974631, 2645427, 6172663, 18517989]

約数ペア:

[(1, 18517989), (3, 6172663), (7, 2645427), (19, 974631), (21, 881809), (57, 324877), (133, 139233), (399, 46411)]