21000707

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2593}}^1$

素因数の和:2702

約数の個数: 16

約数和(自身を含む): 26147520

約数和(自身を除く): 5146813

約数列:

[1, 7, 13, 89, 91, 623, 1157, 2593, 8099, 18151, 33709, 230777, 235963, 1615439, 3000101, 21000707]

約数ペア:

[(1, 21000707), (7, 3000101), (13, 1615439), (89, 235963), (91, 230777), (623, 33709), (1157, 18151), (2593, 8099)]