28080787

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 35942400

約数和(自身を除く): 7861613

約数列:

[1, 7, 17, 29, 79, 103, 119, 203, 493, 553, 721, 1343, 1751, 2291, 2987, 3451, 8137, 9401, 12257, 16037, 20909, 38947, 50779, 56959, 138329, 235973, 272629, 355453, 968303, 1651811, 4011541, 28080787]

約数ペア:

[(1, 28080787), (7, 4011541), (17, 1651811), (29, 968303), (79, 355453), (103, 272629), (119, 235973), (203, 138329), (493, 56959), (553, 50779), (721, 38947), (1343, 20909), (1751, 16037), (2291, 12257), (2987, 9401), (3451, 8137)]