19782581

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1459}}^1$

素因数の和:1628

約数の個数: 16

約数和(自身を含む): 24528000

約数和(自身を除く): 4745419

約数列:

[1, 7, 13, 91, 149, 1043, 1459, 1937, 10213, 13559, 18967, 132769, 217391, 1521737, 2826083, 19782581]

約数ペア:

[(1, 19782581), (7, 2826083), (13, 1521737), (91, 217391), (149, 132769), (1043, 18967), (1459, 13559), (1937, 10213)]