8171920

素因数分解:

$2^4\times 5^1\times {\mathrm{102149}}^1$

素因数の和:102162

約数の個数: 20

約数和(自身を含む): 18999900

約数和(自身を除く): 10827980

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 102149, 204298, 408596, 510745, 817192, 1021490, 1634384, 2042980, 4085960, 8171920]

約数ペア:

[(1, 8171920), (2, 4085960), (4, 2042980), (5, 1634384), (8, 1021490), (10, 817192), (16, 510745), (20, 408596), (40, 204298), (80, 102149)]