81385516

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{228611}}^1$

素因数の和:228704

約数の個数: 12

約数和(自身を含む): 144025560

約数和(自身を除く): 62640044

約数列:

[1, 2, 4, 89, 178, 356, 228611, 457222, 914444, 20346379, 40692758, 81385516]

約数ペア:

[(1, 81385516), (2, 40692758), (4, 20346379), (89, 914444), (178, 457222), (356, 228611)]