20986906

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1\times {\mathrm{1153}}^1$

素因数の和:1653

約数の個数: 16

約数和(自身を含む): 33235200

約数和(自身を除く): 12248294

約数列:

[1, 2, 19, 38, 479, 958, 1153, 2306, 9101, 18202, 21907, 43814, 552287, 1104574, 10493453, 20986906]

約数ペア:

[(1, 20986906), (2, 10493453), (19, 1104574), (38, 552287), (479, 43814), (958, 21907), (1153, 18202), (2306, 9101)]