20787188

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{257}}^1\times {\mathrm{277}}^1$

素因数の和:611

約数の個数: 24

約数和(自身を含む): 37153032

約数和(自身を除く): 16365844

約数列:

[1, 2, 4, 73, 146, 257, 277, 292, 514, 554, 1028, 1108, 18761, 20221, 37522, 40442, 71189, 75044, 80884, 142378, 284756, 5196797, 10393594, 20787188]

約数ペア:

[(1, 20787188), (2, 10393594), (4, 5196797), (73, 284756), (146, 142378), (257, 80884), (277, 75044), (292, 71189), (514, 40442), (554, 37522), (1028, 20221), (1108, 18761)]