39997520

素因数分解:

$2^4\times 5^1\times {\mathrm{499969}}^1$

素因数の和:499982

約数の個数: 20

約数和(自身を含む): 92994420

約数和(自身を除く): 52996900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499969, 999938, 1999876, 2499845, 3999752, 4999690, 7999504, 9999380, 19998760, 39997520]

約数ペア:

[(1, 39997520), (2, 19998760), (4, 9999380), (5, 7999504), (8, 4999690), (10, 3999752), (16, 2499845), (20, 1999876), (40, 999938), (80, 499969)]