21711620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155083}}^1$

素因数の和:155099

約数の個数: 24

約数和(自身を含む): 52108224

約数和(自身を除く): 30396604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155083, 310166, 620332, 775415, 1085581, 1550830, 2171162, 3101660, 4342324, 5427905, 10855810, 21711620]

約数ペア:

[(1, 21711620), (2, 10855810), (4, 5427905), (5, 4342324), (7, 3101660), (10, 2171162), (14, 1550830), (20, 1085581), (28, 775415), (35, 620332), (70, 310166), (140, 155083)]