396942640

素因数分解:

$2^4\times 5^1\times {\mathrm{4961783}}^1$

素因数の和:4961796

約数の個数: 20

約数和(自身を含む): 922891824

約数和(自身を除く): 525949184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4961783, 9923566, 19847132, 24808915, 39694264, 49617830, 79388528, 99235660, 198471320, 396942640]

約数ペア:

[(1, 396942640), (2, 198471320), (4, 99235660), (5, 79388528), (8, 49617830), (10, 39694264), (16, 24808915), (20, 19847132), (40, 9923566), (80, 4961783)]