209520260

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{75367}}^1$

素因数の和:75515

約数の個数: 24

約数和(自身を含む): 443163840

約数和(自身を除く): 233643580

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 75367, 150734, 301468, 376835, 753670, 1507340, 10476013, 20952026, 41904052, 52380065, 104760130, 209520260]

約数ペア:

[(1, 209520260), (2, 104760130), (4, 52380065), (5, 41904052), (10, 20952026), (20, 10476013), (139, 1507340), (278, 753670), (556, 376835), (695, 301468), (1390, 150734), (2780, 75367)]