19778577

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{5573}}^1$

素因数の和:5609

約数の個数: 24

約数和(自身を含む): 32641344

約数和(自身を除く): 12862767

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 507, 1183, 3549, 5573, 16719, 39011, 72449, 117033, 217347, 507143, 941837, 1521429, 2825511, 6592859, 19778577]

約数ペア:

[(1, 19778577), (3, 6592859), (7, 2825511), (13, 1521429), (21, 941837), (39, 507143), (91, 217347), (169, 117033), (273, 72449), (507, 39011), (1183, 16719), (3549, 5573)]