68971780

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{6911}}^1$

素因数の和:7419

約数の個数: 24

約数和(自身を含む): 145152000

約数和(自身を除く): 76180220

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990, 6911, 9980, 13822, 27644, 34555, 69110, 138220, 3448589, 6897178, 13794356, 17242945, 34485890, 68971780]

約数ペア:

[(1, 68971780), (2, 34485890), (4, 17242945), (5, 13794356), (10, 6897178), (20, 3448589), (499, 138220), (998, 69110), (1996, 34555), (2495, 27644), (4990, 13822), (6911, 9980)]