15979120

素因数分解:

$2^4\times 5^1\times {\mathrm{199739}}^1$

素因数の和:199752

約数の個数: 20

約数和(自身を含む): 37151640

約数和(自身を除く): 21172520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199739, 399478, 798956, 998695, 1597912, 1997390, 3195824, 3994780, 7989560, 15979120]

約数ペア:

[(1, 15979120), (2, 7989560), (4, 3994780), (5, 3195824), (8, 1997390), (10, 1597912), (16, 998695), (20, 798956), (40, 399478), (80, 199739)]