51942640

素因数分解:

$2^4\times 5^1\times {\mathrm{649283}}^1$

素因数の和:649296

約数の個数: 20

約数和(自身を含む): 120766824

約数和(自身を除く): 68824184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 649283, 1298566, 2597132, 3246415, 5194264, 6492830, 10388528, 12985660, 25971320, 51942640]

約数ペア:

[(1, 51942640), (2, 25971320), (4, 12985660), (5, 10388528), (8, 6492830), (10, 5194264), (16, 3246415), (20, 2597132), (40, 1298566), (80, 649283)]