20581666

素因数分解:

$2^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{2039}}^1$

素因数の和:2158

約数の個数: 24

約数和(自身を含む): 36279360

約数和(自身を除く): 15697694

約数列:

[1, 2, 7, 14, 49, 98, 103, 206, 721, 1442, 2039, 4078, 5047, 10094, 14273, 28546, 99911, 199822, 210017, 420034, 1470119, 2940238, 10290833, 20581666]

約数ペア:

[(1, 20581666), (2, 10290833), (7, 2940238), (14, 1470119), (49, 420034), (98, 210017), (103, 199822), (206, 99911), (721, 28546), (1442, 14273), (2039, 10094), (4078, 5047)]