55640440

素因数分解:

$2^3\times 5^1\times {\mathrm{1391011}}^1$

素因数の和:1391022

約数の個数: 16

約数和(自身を含む): 125191080

約数和(自身を除く): 69550640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1391011, 2782022, 5564044, 6955055, 11128088, 13910110, 27820220, 55640440]

約数ペア:

[(1, 55640440), (2, 27820220), (4, 13910110), (5, 11128088), (8, 6955055), (10, 5564044), (20, 2782022), (40, 1391011)]