20780474

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{643}}^1$

素因数の和:782

約数の個数: 32

約数和(自身を含む): 37001664

約数和(自身を除く): 16221190

約数列:

[1, 2, 11, 13, 22, 26, 113, 143, 226, 286, 643, 1243, 1286, 1469, 2486, 2938, 7073, 8359, 14146, 16159, 16718, 32318, 72659, 91949, 145318, 183898, 799249, 944567, 1598498, 1889134, 10390237, 20780474]

約数ペア:

[(1, 20780474), (2, 10390237), (11, 1889134), (13, 1598498), (22, 944567), (26, 799249), (113, 183898), (143, 145318), (226, 91949), (286, 72659), (643, 32318), (1243, 16718), (1286, 16159), (1469, 14146), (2486, 8359), (2938, 7073)]