20717815

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{1093}}^1$

素因数の和:1338

約数の個数: 16

約数和(自身を含む): 26466048

約数和(自身を除く): 5748233

約数列:

[1, 5, 17, 85, 223, 1093, 1115, 3791, 5465, 18581, 18955, 92905, 243739, 1218695, 4143563, 20717815]

約数ペア:

[(1, 20717815), (5, 4143563), (17, 1218695), (85, 243739), (223, 92905), (1093, 18955), (1115, 18581), (3791, 5465)]