28786280

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1879}}^1$

素因数の和:2273

約数の個数: 32

約数和(自身を含む): 64972800

約数和(自身を除く): 36186520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1532, 1879, 1915, 3064, 3758, 3830, 7516, 7660, 9395, 15032, 15320, 18790, 37580, 75160, 719657, 1439314, 2878628, 3598285, 5757256, 7196570, 14393140, 28786280]

約数ペア:

[(1, 28786280), (2, 14393140), (4, 7196570), (5, 5757256), (8, 3598285), (10, 2878628), (20, 1439314), (40, 719657), (383, 75160), (766, 37580), (1532, 18790), (1879, 15320), (1915, 15032), (3064, 9395), (3758, 7660), (3830, 7516)]