261319303

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{87427}}^1$

素因数の和:87502

約数の個数: 12

約数和(自身を含む): 308970552

約数和(自身を除く): 47651249

約数列:

[1, 7, 49, 61, 427, 2989, 87427, 611989, 4283923, 5333047, 37331329, 261319303]

約数ペア:

[(1, 261319303), (7, 37331329), (49, 5333047), (61, 4283923), (427, 611989), (2989, 87427)]