318203920

素因数分解:

$2^4\times 5^1\times {\mathrm{3977549}}^1$

素因数の和:3977562

約数の個数: 20

約数和(自身を含む): 739824300

約数和(自身を除く): 421620380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3977549, 7955098, 15910196, 19887745, 31820392, 39775490, 63640784, 79550980, 159101960, 318203920]

約数ペア:

[(1, 318203920), (2, 159101960), (4, 79550980), (5, 63640784), (8, 39775490), (10, 31820392), (16, 19887745), (20, 15910196), (40, 7955098), (80, 3977549)]