20988212

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{14143}}^1$

素因数の和:14207

約数の個数: 24

約数和(自身を含む): 42771456

約数和(自身を除く): 21783244

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 14143, 28286, 56572, 99001, 198002, 396004, 749579, 1499158, 2998316, 5247053, 10494106, 20988212]

約数ペア:

[(1, 20988212), (2, 10494106), (4, 5247053), (7, 2998316), (14, 1499158), (28, 749579), (53, 396004), (106, 198002), (212, 99001), (371, 56572), (742, 28286), (1484, 14143)]