289994360

素因数分解:

$2^3\times 5^1\times {\mathrm{1787}}^1\times {\mathrm{4057}}^1$

素因数の和:5855

約数の個数: 32

約数和(自身を含む): 653013360

約数和(自身を除く): 363019000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1787, 3574, 4057, 7148, 8114, 8935, 14296, 16228, 17870, 20285, 32456, 35740, 40570, 71480, 81140, 162280, 7249859, 14499718, 28999436, 36249295, 57998872, 72498590, 144997180, 289994360]

約数ペア:

[(1, 289994360), (2, 144997180), (4, 72498590), (5, 57998872), (8, 36249295), (10, 28999436), (20, 14499718), (40, 7249859), (1787, 162280), (3574, 81140), (4057, 71480), (7148, 40570), (8114, 35740), (8935, 32456), (14296, 20285), (16228, 17870)]