217433740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{639511}}^1$

素因数の和:639537

約数の個数: 24

約数和(自身を含む): 483471072

約数和(自身を除く): 266037332

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 639511, 1279022, 2558044, 3197555, 6395110, 10871687, 12790220, 21743374, 43486748, 54358435, 108716870, 217433740]

約数ペア:

[(1, 217433740), (2, 108716870), (4, 54358435), (5, 43486748), (10, 21743374), (17, 12790220), (20, 10871687), (34, 6395110), (68, 3197555), (85, 2558044), (170, 1279022), (340, 639511)]