20019155

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{4219}}^1$

素因数の和:4310

約数の個数: 16

約数和(自身を含む): 26231520

約数和(自身を除く): 6212365

約数列:

[1, 5, 13, 65, 73, 365, 949, 4219, 4745, 21095, 54847, 274235, 307987, 1539935, 4003831, 20019155]

約数ペア:

[(1, 20019155), (5, 4003831), (13, 1539935), (65, 307987), (73, 274235), (365, 54847), (949, 21095), (4219, 4745)]