280090180

素因数分解:

$2^2\times 5^1\times {\mathrm{1549}}^1\times {\mathrm{9041}}^1$

素因数の和:10599

約数の個数: 24

約数和(自身を含む): 588634200

約数和(自身を除く): 308544020

約数列:

[1, 2, 4, 5, 10, 20, 1549, 3098, 6196, 7745, 9041, 15490, 18082, 30980, 36164, 45205, 90410, 180820, 14004509, 28009018, 56018036, 70022545, 140045090, 280090180]

約数ペア:

[(1, 280090180), (2, 140045090), (4, 70022545), (5, 56018036), (10, 28009018), (20, 14004509), (1549, 180820), (3098, 90410), (6196, 45205), (7745, 36164), (9041, 30980), (15490, 18082)]