680069680

素因数分解:

$2^4\times 5^1\times {\mathrm{8500871}}^1$

素因数の和:8500884

約数の個数: 20

約数和(自身を含む): 1581162192

約数和(自身を除く): 901092512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8500871, 17001742, 34003484, 42504355, 68006968, 85008710, 136013936, 170017420, 340034840, 680069680]

約数ペア:

[(1, 680069680), (2, 340034840), (4, 170017420), (5, 136013936), (8, 85008710), (10, 68006968), (16, 42504355), (20, 34003484), (40, 17001742), (80, 8500871)]