2008698820

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{639713}}^1$

素因数の和:639879

約数の個数: 24

約数和(自身を含む): 4245142104

約数和(自身を除く): 2236443284

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 639713, 1279426, 2558852, 3198565, 6397130, 12794260, 100434941, 200869882, 401739764, 502174705, 1004349410, 2008698820]

約数ペア:

[(1, 2008698820), (2, 1004349410), (4, 502174705), (5, 401739764), (10, 200869882), (20, 100434941), (157, 12794260), (314, 6397130), (628, 3198565), (785, 2558852), (1570, 1279426), (3140, 639713)]