81180818

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:378

約数の個数: 32

約数和(自身を含む): 128859456

約数和(自身を除く): 47678638

約数列:

[1, 2, 43, 67, 73, 86, 134, 146, 193, 386, 2881, 3139, 4891, 5762, 6278, 8299, 9782, 12931, 14089, 16598, 25862, 28178, 210313, 420626, 556033, 605827, 943963, 1112066, 1211654, 1887926, 40590409, 81180818]

約数ペア:

[(1, 81180818), (2, 40590409), (43, 1887926), (67, 1211654), (73, 1112066), (86, 943963), (134, 605827), (146, 556033), (193, 420626), (386, 210313), (2881, 28178), (3139, 25862), (4891, 16598), (5762, 14089), (6278, 12931), (8299, 9782)]