39879440

素因数分解:

$2^4\times 5^1\times {\mathrm{498493}}^1$

素因数の和:498506

約数の個数: 20

約数和(自身を含む): 92719884

約数和(自身を除く): 52840444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 498493, 996986, 1993972, 2492465, 3987944, 4984930, 7975888, 9969860, 19939720, 39879440]

約数ペア:

[(1, 39879440), (2, 19939720), (4, 9969860), (5, 7975888), (8, 4984930), (10, 3987944), (16, 2492465), (20, 1993972), (40, 996986), (80, 498493)]