139628979

素因数分解:

$3^2\times 7^2\times {\mathrm{479}}^1\times {\mathrm{661}}^1$

素因数の和:1160

約数の個数: 36

約数和(自身を含む): 235460160

約数和(自身を除く): 95831181

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 479, 661, 1437, 1983, 3353, 4311, 4627, 5949, 10059, 13881, 23471, 30177, 32389, 41643, 70413, 97167, 211239, 291501, 316619, 949857, 2216333, 2849571, 6648999, 15514331, 19946997, 46542993, 139628979]

約数ペア:

[(1, 139628979), (3, 46542993), (7, 19946997), (9, 15514331), (21, 6648999), (49, 2849571), (63, 2216333), (147, 949857), (441, 316619), (479, 291501), (661, 211239), (1437, 97167), (1983, 70413), (3353, 41643), (4311, 32389), (4627, 30177), (5949, 23471), (10059, 13881)]