19979001

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2857}}^1$

素因数の和:2910

約数の個数: 32

約数和(自身を含む): 34753280

約数和(自身を除く): 14774279

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 2857, 6993, 8571, 19999, 25713, 59997, 77139, 105709, 179991, 317127, 539973, 739963, 951381, 2219889, 2854143, 6659667, 19979001]

約数ペア:

[(1, 19979001), (3, 6659667), (7, 2854143), (9, 2219889), (21, 951381), (27, 739963), (37, 539973), (63, 317127), (111, 179991), (189, 105709), (259, 77139), (333, 59997), (777, 25713), (999, 19999), (2331, 8571), (2857, 6993)]