20144680

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1609}}^1$

素因数の和:1933

約数の個数: 32

約数和(自身を含む): 45498600

約数和(自身を除く): 25353920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 1609, 2504, 3130, 3218, 6260, 6436, 8045, 12520, 12872, 16090, 32180, 64360, 503617, 1007234, 2014468, 2518085, 4028936, 5036170, 10072340, 20144680]

約数ペア:

[(1, 20144680), (2, 10072340), (4, 5036170), (5, 4028936), (8, 2518085), (10, 2014468), (20, 1007234), (40, 503617), (313, 64360), (626, 32180), (1252, 16090), (1565, 12872), (1609, 12520), (2504, 8045), (3130, 6436), (3218, 6260)]