639717

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{349}}^1$

素因数の和:412

約数の個数: 16

約数和(自身を含む): 940800

約数和(自身を除く): 301083

約数列:

[1, 3, 13, 39, 47, 141, 349, 611, 1047, 1833, 4537, 13611, 16403, 49209, 213239, 639717]

約数ペア:

[(1, 639717), (3, 213239), (13, 49209), (39, 16403), (47, 13611), (141, 4537), (349, 1833), (611, 1047)]