20787949

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7369}}^1$

素因数の和:7420

約数の個数: 16

約数和(自身を含む): 26414080

約数和(自身を除く): 5626131

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 7369, 51583, 95797, 228439, 670579, 1599073, 2969707, 20787949]

約数ペア:

[(1, 20787949), (7, 2969707), (13, 1599073), (31, 670579), (91, 228439), (217, 95797), (403, 51583), (2821, 7369)]