19989544

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{80603}}^1$

素因数の和:80640

約数の個数: 16

約数和(自身を含む): 38689920

約数和(自身を除く): 18700376

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 80603, 161206, 322412, 644824, 2498693, 4997386, 9994772, 19989544]

約数ペア:

[(1, 19989544), (2, 9994772), (4, 4997386), (8, 2498693), (31, 644824), (62, 322412), (124, 161206), (248, 80603)]