81566639

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{439}}^1$

素因数の和:603

約数の個数: 32

約数和(自身を含む): 108134400

約数和(自身を除く): 26567761

約数列:

[1, 7, 11, 19, 77, 127, 133, 209, 439, 889, 1397, 1463, 2413, 3073, 4829, 8341, 9779, 16891, 26543, 33803, 55753, 58387, 91751, 185801, 390271, 613283, 642257, 1059307, 4292981, 7415149, 11652377, 81566639]

約数ペア:

[(1, 81566639), (7, 11652377), (11, 7415149), (19, 4292981), (77, 1059307), (127, 642257), (133, 613283), (209, 390271), (439, 185801), (889, 91751), (1397, 58387), (1463, 55753), (2413, 33803), (3073, 26543), (4829, 16891), (8341, 9779)]