28221680

素因数分解:

$2^4\times 5^1\times {\mathrm{352771}}^1$

素因数の和:352784

約数の個数: 20

約数和(自身を含む): 65615592

約数和(自身を除く): 37393912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 352771, 705542, 1411084, 1763855, 2822168, 3527710, 5644336, 7055420, 14110840, 28221680]

約数ペア:

[(1, 28221680), (2, 14110840), (4, 7055420), (5, 5644336), (8, 3527710), (10, 2822168), (16, 1763855), (20, 1411084), (40, 705542), (80, 352771)]