20875191

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 30578688

約数和(自身を除く): 9703497

約数列:

[1, 3, 23, 41, 47, 69, 123, 141, 157, 471, 943, 1081, 1927, 2829, 3243, 3611, 5781, 6437, 7379, 10833, 19311, 22137, 44321, 132963, 148051, 169717, 302539, 444153, 509151, 907617, 6958397, 20875191]

約数ペア:

[(1, 20875191), (3, 6958397), (23, 907617), (41, 509151), (47, 444153), (69, 302539), (123, 169717), (141, 148051), (157, 132963), (471, 44321), (943, 22137), (1081, 19311), (1927, 10833), (2829, 7379), (3243, 6437), (3611, 5781)]