18780055

素因数分解:

$5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{2543}}^1$

素因数の和:2766

約数の個数: 16

約数和(自身を含む): 25887744

約数和(自身を除く): 7107689

約数列:

[1, 5, 7, 35, 211, 1055, 1477, 2543, 7385, 12715, 17801, 89005, 536573, 2682865, 3756011, 18780055]

約数ペア:

[(1, 18780055), (5, 3756011), (7, 2682865), (35, 536573), (211, 89005), (1055, 17801), (1477, 12715), (2543, 7385)]