82728680

素因数分解:

$2^3\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2087}}^1$

素因数の和:3089

約数の個数: 32

約数和(自身を含む): 186416640

約数和(自身を除く): 103687960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 991, 1982, 2087, 3964, 4174, 4955, 7928, 8348, 9910, 10435, 16696, 19820, 20870, 39640, 41740, 83480, 2068217, 4136434, 8272868, 10341085, 16545736, 20682170, 41364340, 82728680]

約数ペア:

[(1, 82728680), (2, 41364340), (4, 20682170), (5, 16545736), (8, 10341085), (10, 8272868), (20, 4136434), (40, 2068217), (991, 83480), (1982, 41740), (2087, 39640), (3964, 20870), (4174, 19820), (4955, 16696), (7928, 10435), (8348, 9910)]