20877909

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{2083}}^1$

素因数の和:2356

約数の個数: 16

約数和(自身を含む): 30109632

約数和(自身を除く): 9231723

約数列:

[1, 3, 13, 39, 257, 771, 2083, 3341, 6249, 10023, 27079, 81237, 535331, 1605993, 6959303, 20877909]

約数ペア:

[(1, 20877909), (3, 6959303), (13, 1605993), (39, 535331), (257, 81237), (771, 27079), (2083, 10023), (3341, 6249)]