19212981

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1\times {\mathrm{907}}^1$

素因数の和:1240

約数の個数: 16

約数和(自身を含む): 26847744

約数和(自身を除く): 7634763

約数列:

[1, 3, 23, 69, 307, 907, 921, 2721, 7061, 20861, 21183, 62583, 278449, 835347, 6404327, 19212981]

約数ペア:

[(1, 19212981), (3, 6404327), (23, 835347), (69, 278449), (307, 62583), (907, 21183), (921, 20861), (2721, 7061)]