80388080

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{5261}}^1$

素因数の和:5465

約数の個数: 40

約数和(自身を含む): 187916544

約数和(自身を除く): 107528464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1528, 1910, 3056, 3820, 5261, 7640, 10522, 15280, 21044, 26305, 42088, 52610, 84176, 105220, 210440, 420880, 1004851, 2009702, 4019404, 5024255, 8038808, 10048510, 16077616, 20097020, 40194040, 80388080]

約数ペア:

[(1, 80388080), (2, 40194040), (4, 20097020), (5, 16077616), (8, 10048510), (10, 8038808), (16, 5024255), (20, 4019404), (40, 2009702), (80, 1004851), (191, 420880), (382, 210440), (764, 105220), (955, 84176), (1528, 52610), (1910, 42088), (3056, 26305), (3820, 21044), (5261, 15280), (7640, 10522)]