15979280

素因数分解:

$2^4\times 5^1\times {\mathrm{199741}}^1$

素因数の和:199754

約数の個数: 20

約数和(自身を含む): 37152012

約数和(自身を除く): 21172732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199741, 399482, 798964, 998705, 1597928, 1997410, 3195856, 3994820, 7989640, 15979280]

約数ペア:

[(1, 15979280), (2, 7989640), (4, 3994820), (5, 3195856), (8, 1997410), (10, 1597928), (16, 998705), (20, 798964), (40, 399482), (80, 199741)]