20123081881

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{503}}^1\times {\mathrm{55487}}^1$

素因数の和:56100

約数の個数: 16

約数和(自身を含む): 23267672064

約数和(自身を除く): 3144590183

約数列:

[1, 7, 103, 503, 721, 3521, 51809, 55487, 362663, 388409, 5715161, 27909961, 40006127, 195369727, 2874725983, 20123081881]

約数ペア:

[(1, 20123081881), (7, 2874725983), (103, 195369727), (503, 40006127), (721, 27909961), (3521, 5715161), (51809, 388409), (55487, 362663)]