80688760

素因数分解:

$2^3\times 5^1\times {\mathrm{1213}}^1\times {\mathrm{1663}}^1$

素因数の和:2887

約数の個数: 32

約数和(自身を含む): 181808640

約数和(自身を除く): 101119880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1213, 1663, 2426, 3326, 4852, 6065, 6652, 8315, 9704, 12130, 13304, 16630, 24260, 33260, 48520, 66520, 2017219, 4034438, 8068876, 10086095, 16137752, 20172190, 40344380, 80688760]

約数ペア:

[(1, 80688760), (2, 40344380), (4, 20172190), (5, 16137752), (8, 10086095), (10, 8068876), (20, 4034438), (40, 2017219), (1213, 66520), (1663, 48520), (2426, 33260), (3326, 24260), (4852, 16630), (6065, 13304), (6652, 12130), (8315, 9704)]