18578007

素因数分解:

$3^2\times 7^2\times {\mathrm{103}}^1\times {\mathrm{409}}^1$

素因数の和:532

約数の個数: 36

約数和(自身を含む): 31596240

約数和(自身を除く): 13018233

約数列:

[1, 3, 7, 9, 21, 49, 63, 103, 147, 309, 409, 441, 721, 927, 1227, 2163, 2863, 3681, 5047, 6489, 8589, 15141, 20041, 25767, 42127, 45423, 60123, 126381, 180369, 294889, 379143, 884667, 2064223, 2654001, 6192669, 18578007]

約数ペア:

[(1, 18578007), (3, 6192669), (7, 2654001), (9, 2064223), (21, 884667), (49, 379143), (63, 294889), (103, 180369), (147, 126381), (309, 60123), (409, 45423), (441, 42127), (721, 25767), (927, 20041), (1227, 15141), (2163, 8589), (2863, 6489), (3681, 5047)]