20817260

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4933}}^1$

素因数の和:5153

約数の個数: 24

約数和(自身を含む): 43932336

約数和(自身を除く): 23115076

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4933, 9866, 19732, 24665, 49330, 98660, 1040863, 2081726, 4163452, 5204315, 10408630, 20817260]

約数ペア:

[(1, 20817260), (2, 10408630), (4, 5204315), (5, 4163452), (10, 2081726), (20, 1040863), (211, 98660), (422, 49330), (844, 24665), (1055, 19732), (2110, 9866), (4220, 4933)]