20979740

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{28351}}^1$

素因数の和:28397

約数の個数: 24

約数和(自身を含む): 45249792

約数和(自身を除く): 24270052

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 28351, 56702, 113404, 141755, 283510, 567020, 1048987, 2097974, 4195948, 5244935, 10489870, 20979740]

約数ペア:

[(1, 20979740), (2, 10489870), (4, 5244935), (5, 4195948), (10, 2097974), (20, 1048987), (37, 567020), (74, 283510), (148, 141755), (185, 113404), (370, 56702), (740, 28351)]