639492091

素因数分解:

$7^2\times {\mathrm{59}}^1\times {\mathrm{221201}}^1$

素因数の和:221274

約数の個数: 12

約数和(自身を含む): 756510840

約数和(自身を除く): 117018749

約数列:

[1, 7, 49, 59, 413, 2891, 221201, 1548407, 10838849, 13050859, 91356013, 639492091]

約数ペア:

[(1, 639492091), (7, 91356013), (49, 13050859), (59, 10838849), (413, 1548407), (2891, 221201)]