206640447

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{278867}}^1$

素因数の和:278902

約数の個数: 16

約数和(自身を含む): 312332160

約数和(自身を除く): 105691713

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 278867, 836601, 3625271, 5298473, 10875813, 15895419, 68880149, 206640447]

約数ペア:

[(1, 206640447), (3, 68880149), (13, 15895419), (19, 10875813), (39, 5298473), (57, 3625271), (247, 836601), (741, 278867)]