20920915

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{1669}}^1$

素因数の和:1806

約数の個数: 16

約数和(自身を含む): 26452800

約数和(自身を除く): 5531885

約数列:

[1, 5, 23, 109, 115, 545, 1669, 2507, 8345, 12535, 38387, 181921, 191935, 909605, 4184183, 20920915]

約数ペア:

[(1, 20920915), (5, 4184183), (23, 909605), (109, 191935), (115, 181921), (545, 38387), (1669, 12535), (2507, 8345)]