28840120

素因数分解:

$2^3\times 5^1\times {\mathrm{721003}}^1$

素因数の和:721014

約数の個数: 16

約数和(自身を含む): 64890360

約数和(自身を除く): 36050240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 721003, 1442006, 2884012, 3605015, 5768024, 7210030, 14420060, 28840120]

約数ペア:

[(1, 28840120), (2, 14420060), (4, 7210030), (5, 5768024), (8, 3605015), (10, 2884012), (20, 1442006), (40, 721003)]