199213880

素因数分解:

$2^3\times 5^1\times {\mathrm{4980347}}^1$

素因数の和:4980358

約数の個数: 16

約数和(自身を含む): 448231320

約数和(自身を除く): 249017440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4980347, 9960694, 19921388, 24901735, 39842776, 49803470, 99606940, 199213880]

約数ペア:

[(1, 199213880), (2, 99606940), (4, 49803470), (5, 39842776), (8, 24901735), (10, 19921388), (20, 9960694), (40, 4980347)]