20990004

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{249881}}^1$

素因数の和:249895

約数の個数: 24

約数和(自身を含む): 55973568

約数和(自身を除く): 34983564

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 249881, 499762, 749643, 999524, 1499286, 1749167, 2998572, 3498334, 5247501, 6996668, 10495002, 20990004]

約数ペア:

[(1, 20990004), (2, 10495002), (3, 6996668), (4, 5247501), (6, 3498334), (7, 2998572), (12, 1749167), (14, 1499286), (21, 999524), (28, 749643), (42, 499762), (84, 249881)]