20158265

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{919}}^1$

素因数の和:1072

約数の個数: 16

約数和(自身を含む): 25038720

約数和(自身を除く): 4880455

約数列:

[1, 5, 41, 107, 205, 535, 919, 4387, 4595, 21935, 37679, 98333, 188395, 491665, 4031653, 20158265]

約数ペア:

[(1, 20158265), (5, 4031653), (41, 491665), (107, 188395), (205, 98333), (535, 37679), (919, 21935), (4387, 4595)]