20759920

素因数分解:

$2^4\times 5^1\times {\mathrm{259499}}^1$

素因数の和:259512

約数の個数: 20

約数和(自身を含む): 48267000

約数和(自身を除く): 27507080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 259499, 518998, 1037996, 1297495, 2075992, 2594990, 4151984, 5189980, 10379960, 20759920]

約数ペア:

[(1, 20759920), (2, 10379960), (4, 5189980), (5, 4151984), (8, 2594990), (10, 2075992), (16, 1297495), (20, 1037996), (40, 518998), (80, 259499)]