71980400

素因数分解:

$2^4\times 5^2\times {\mathrm{179951}}^1$

素因数の和:179969

約数の個数: 30

約数和(自身を含む): 172933872

約数和(自身を除く): 100953472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 179951, 359902, 719804, 899755, 1439608, 1799510, 2879216, 3599020, 4498775, 7198040, 8997550, 14396080, 17995100, 35990200, 71980400]

約数ペア:

[(1, 71980400), (2, 35990200), (4, 17995100), (5, 14396080), (8, 8997550), (10, 7198040), (16, 4498775), (20, 3599020), (25, 2879216), (40, 1799510), (50, 1439608), (80, 899755), (100, 719804), (200, 359902), (400, 179951)]