20796080

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1361}}^1$

素因数の和:1565

約数の個数: 40

約数和(自身を含む): 48639744

約数和(自身を除く): 27843664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1361, 1528, 1910, 2722, 3056, 3820, 5444, 6805, 7640, 10888, 13610, 15280, 21776, 27220, 54440, 108880, 259951, 519902, 1039804, 1299755, 2079608, 2599510, 4159216, 5199020, 10398040, 20796080]

約数ペア:

[(1, 20796080), (2, 10398040), (4, 5199020), (5, 4159216), (8, 2599510), (10, 2079608), (16, 1299755), (20, 1039804), (40, 519902), (80, 259951), (191, 108880), (382, 54440), (764, 27220), (955, 21776), (1361, 15280), (1528, 13610), (1910, 10888), (2722, 7640), (3056, 6805), (3820, 5444)]