19947697

素因数分解:

$7^1\times {\mathrm{11}}^3\times {\mathrm{2141}}^1$

素因数の和:2181

約数の個数: 16

約数和(自身を含む): 25087104

約数和(自身を除く): 5139407

約数列:

[1, 7, 11, 77, 121, 847, 1331, 2141, 9317, 14987, 23551, 164857, 259061, 1813427, 2849671, 19947697]

約数ペア:

[(1, 19947697), (7, 2849671), (11, 1813427), (77, 259061), (121, 164857), (847, 23551), (1331, 14987), (2141, 9317)]