19865290

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{68501}}^1$

素因数の和:68537

約数の個数: 16

約数和(自身を含む): 36991080

約数和(自身を除く): 17125790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 68501, 137002, 342505, 685010, 1986529, 3973058, 9932645, 19865290]

約数ペア:

[(1, 19865290), (2, 9932645), (5, 3973058), (10, 1986529), (29, 685010), (58, 342505), (145, 137002), (290, 68501)]