426640

素因数分解:

$2^4\times 5^1\times {\mathrm{5333}}^1$

素因数の和:5346

約数の個数: 20

約数和(自身を含む): 992124

約数和(自身を除く): 565484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5333, 10666, 21332, 26665, 42664, 53330, 85328, 106660, 213320, 426640]

約数ペア:

[(1, 426640), (2, 213320), (4, 106660), (5, 85328), (8, 53330), (10, 42664), (16, 26665), (20, 21332), (40, 10666), (80, 5333)]