15977980

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1601}}^1$

素因数の和:2109

約数の個数: 24

約数和(自身を含む): 33642000

約数和(自身を除く): 17664020

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1601, 1996, 2495, 3202, 4990, 6404, 8005, 9980, 16010, 32020, 798899, 1597798, 3195596, 3994495, 7988990, 15977980]

約数ペア:

[(1, 15977980), (2, 7988990), (4, 3994495), (5, 3195596), (10, 1597798), (20, 798899), (499, 32020), (998, 16010), (1601, 9980), (1996, 8005), (2495, 6404), (3202, 4990)]