20988274

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{4349}}^1$

素因数の和:4497

約数の個数: 16

約数和(自身を含む): 33408000

約数和(自身を除く): 12419726

約数列:

[1, 2, 19, 38, 127, 254, 2413, 4349, 4826, 8698, 82631, 165262, 552323, 1104646, 10494137, 20988274]

約数ペア:

[(1, 20988274), (2, 10494137), (19, 1104646), (38, 552323), (127, 165262), (254, 82631), (2413, 8698), (4349, 4826)]