199943960

素因数分解:

$2^3\times 5^1\times {\mathrm{4998599}}^1$

素因数の和:4998610

約数の個数: 16

約数和(自身を含む): 449874000

約数和(自身を除く): 249930040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4998599, 9997198, 19994396, 24992995, 39988792, 49985990, 99971980, 199943960]

約数ペア:

[(1, 199943960), (2, 99971980), (4, 49985990), (5, 39988792), (8, 24992995), (10, 19994396), (20, 9997198), (40, 4998599)]