4381220

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{499}}^1$

素因数の和:947

約数の個数: 24

約数和(自身を含む): 9240000

約数和(自身を除く): 4858780

約数列:

[1, 2, 4, 5, 10, 20, 439, 499, 878, 998, 1756, 1996, 2195, 2495, 4390, 4990, 8780, 9980, 219061, 438122, 876244, 1095305, 2190610, 4381220]

約数ペア:

[(1, 4381220), (2, 2190610), (4, 1095305), (5, 876244), (10, 438122), (20, 219061), (439, 9980), (499, 8780), (878, 4990), (998, 4390), (1756, 2495), (1996, 2195)]