51392560

素因数分解:

$2^4\times 5^1\times {\mathrm{642407}}^1$

素因数の和:642420

約数の個数: 20

約数和(自身を含む): 119487888

約数和(自身を除く): 68095328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 642407, 1284814, 2569628, 3212035, 5139256, 6424070, 10278512, 12848140, 25696280, 51392560]

約数ペア:

[(1, 51392560), (2, 25696280), (4, 12848140), (5, 10278512), (8, 6424070), (10, 5139256), (16, 3212035), (20, 2569628), (40, 1284814), (80, 642407)]