88888180

素因数分解:

$2^2\times 5^1\times {\mathrm{4444409}}^1$

素因数の和:4444418

約数の個数: 12

約数和(自身を含む): 186665220

約数和(自身を除く): 97777040

約数列:

[1, 2, 4, 5, 10, 20, 4444409, 8888818, 17777636, 22222045, 44444090, 88888180]

約数ペア:

[(1, 88888180), (2, 44444090), (4, 22222045), (5, 17777636), (10, 8888818), (20, 4444409)]