19784391

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1\times {\mathrm{907}}^1$

素因数の和:1582

約数の個数: 16

約数和(自身を含む): 28852608

約数和(自身を除く): 9068217

約数列:

[1, 3, 11, 33, 661, 907, 1983, 2721, 7271, 9977, 21813, 29931, 599527, 1798581, 6594797, 19784391]

約数ペア:

[(1, 19784391), (3, 6594797), (11, 1798581), (33, 599527), (661, 29931), (907, 21813), (1983, 9977), (2721, 7271)]