19891081

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{347}}^1\times {\mathrm{431}}^1$

素因数の和:804

約数の個数: 16

約数和(自身を含む): 24053760

約数和(自身を除く): 4162679

約数列:

[1, 7, 19, 133, 347, 431, 2429, 3017, 6593, 8189, 46151, 57323, 149557, 1046899, 2841583, 19891081]

約数ペア:

[(1, 19891081), (7, 2841583), (19, 1046899), (133, 149557), (347, 57323), (431, 46151), (2429, 8189), (3017, 6593)]