27880045780

素因数分解:

$2^2\times 5^1\times {\mathrm{1394002289}}^1$

素因数の和:1394002298

約数の個数: 12

約数和(自身を含む): 58548096180

約数和(自身を除く): 30668050400

約数列:

[1, 2, 4, 5, 10, 20, 1394002289, 2788004578, 5576009156, 6970011445, 13940022890, 27880045780]

約数ペア:

[(1, 27880045780), (2, 13940022890), (4, 6970011445), (5, 5576009156), (10, 2788004578), (20, 1394002289)]