21340785

素因数分解:

$3^1\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1427}}^1$

素因数の和:2432

約数の個数: 16

約数和(自身を含む): 34203456

約数和(自身を除く): 12862671

約数列:

[1, 3, 5, 15, 997, 1427, 2991, 4281, 4985, 7135, 14955, 21405, 1422719, 4268157, 7113595, 21340785]

約数ペア:

[(1, 21340785), (3, 7113595), (5, 4268157), (15, 1422719), (997, 21405), (1427, 14955), (2991, 7135), (4281, 4985)]