20389983

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 30351360

約数和(自身を除く): 9961377

約数列:

[1, 3, 19, 23, 57, 69, 103, 151, 309, 437, 453, 1311, 1957, 2369, 2869, 3473, 5871, 7107, 8607, 10419, 15553, 45011, 46659, 65987, 135033, 197961, 295507, 357719, 886521, 1073157, 6796661, 20389983]

約数ペア:

[(1, 20389983), (3, 6796661), (19, 1073157), (23, 886521), (57, 357719), (69, 295507), (103, 197961), (151, 135033), (309, 65987), (437, 46659), (453, 45011), (1311, 15553), (1957, 10419), (2369, 8607), (2869, 7107), (3473, 5871)]