21000455278

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{1543}}^1\times {\mathrm{618643}}^1$

素因数の和:620199

約数の個数: 16

約数和(自身を含む): 34386708096

約数和(自身を除く): 13386252818

約数列:

[1, 2, 11, 22, 1543, 3086, 16973, 33946, 618643, 1237286, 6805073, 13610146, 954566149, 1909132298, 10500227639, 21000455278]

約数ペア:

[(1, 21000455278), (2, 10500227639), (11, 1909132298), (22, 954566149), (1543, 13610146), (3086, 6805073), (16973, 1237286), (33946, 618643)]