21996080

素因数分解:

$2^4\times 5^1\times {\mathrm{274951}}^1$

素因数の和:274964

約数の個数: 20

約数和(自身を含む): 51141072

約数和(自身を除く): 29144992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 274951, 549902, 1099804, 1374755, 2199608, 2749510, 4399216, 5499020, 10998040, 21996080]

約数ペア:

[(1, 21996080), (2, 10998040), (4, 5499020), (5, 4399216), (8, 2749510), (10, 2199608), (16, 1374755), (20, 1099804), (40, 549902), (80, 274951)]