80661040

素因数分解:

$2^4\times 5^1\times {\mathrm{1008263}}^1$

素因数の和:1008276

約数の個数: 20

約数和(自身を含む): 187537104

約数和(自身を除く): 106876064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1008263, 2016526, 4033052, 5041315, 8066104, 10082630, 16132208, 20165260, 40330520, 80661040]

約数ペア:

[(1, 80661040), (2, 40330520), (4, 20165260), (5, 16132208), (8, 10082630), (10, 8066104), (16, 5041315), (20, 4033052), (40, 2016526), (80, 1008263)]