19983952

素因数分解:

$2^4\times {\mathrm{499}}^1\times {\mathrm{2503}}^1$

素因数の和:3010

約数の個数: 20

約数和(自身を含む): 38812000

約数和(自身を除く): 18828048

約数列:

[1, 2, 4, 8, 16, 499, 998, 1996, 2503, 3992, 5006, 7984, 10012, 20024, 40048, 1248997, 2497994, 4995988, 9991976, 19983952]

約数ペア:

[(1, 19983952), (2, 9991976), (4, 4995988), (8, 2497994), (16, 1248997), (499, 40048), (998, 20024), (1996, 10012), (2503, 7984), (3992, 5006)]