18768020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{30271}}^1$

素因数の和:30311

約数の個数: 24

約数和(自身を含む): 40685568

約数和(自身を除く): 21917548

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 30271, 60542, 121084, 151355, 302710, 605420, 938401, 1876802, 3753604, 4692005, 9384010, 18768020]

約数ペア:

[(1, 18768020), (2, 9384010), (4, 4692005), (5, 3753604), (10, 1876802), (20, 938401), (31, 605420), (62, 302710), (124, 151355), (155, 121084), (310, 60542), (620, 30271)]