80855020

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{9209}}^1$

素因数の和:9657

約数の個数: 24

約数和(自身を含む): 170200800

約数和(自身を除く): 89345780

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 8780, 9209, 18418, 36836, 46045, 92090, 184180, 4042751, 8085502, 16171004, 20213755, 40427510, 80855020]

約数ペア:

[(1, 80855020), (2, 40427510), (4, 20213755), (5, 16171004), (10, 8085502), (20, 4042751), (439, 184180), (878, 92090), (1756, 46045), (2195, 36836), (4390, 18418), (8780, 9209)]