20972138

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{10711}}^1$

素因数の和:10813

約数の個数: 16

約数和(自身を含む): 34706880

約数和(自身を除く): 13734742

約数列:

[1, 2, 11, 22, 89, 178, 979, 1958, 10711, 21422, 117821, 235642, 953279, 1906558, 10486069, 20972138]

約数ペア:

[(1, 20972138), (2, 10486069), (11, 1906558), (22, 953279), (89, 235642), (178, 117821), (979, 21422), (1958, 10711)]