20877389

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:416

約数の個数: 16

約数和(自身を含む): 23172912

約数和(自身を除く): 2295523

約数列:

[1, 13, 53, 157, 193, 689, 2041, 2509, 8321, 10229, 30301, 108173, 132977, 393913, 1605953, 20877389]

約数ペア:

[(1, 20877389), (13, 1605953), (53, 393913), (157, 132977), (193, 108173), (689, 30301), (2041, 10229), (2509, 8321)]