20939818

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{19867}}^1$

素因数の和:19917

約数の個数: 16

約数和(自身を含む): 34331904

約数和(自身を除く): 13392086

約数列:

[1, 2, 17, 31, 34, 62, 527, 1054, 19867, 39734, 337739, 615877, 675478, 1231754, 10469909, 20939818]

約数ペア:

[(1, 20939818), (2, 10469909), (17, 1231754), (31, 675478), (34, 615877), (62, 337739), (527, 39734), (1054, 19867)]