21386946

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{4759}}^1$

素因数の和:4878

約数の個数: 32

約数和(自身を含む): 49351680

約数和(自身を除く): 27964734

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 107, 214, 321, 642, 749, 1498, 2247, 4494, 4759, 9518, 14277, 28554, 33313, 66626, 99939, 199878, 509213, 1018426, 1527639, 3055278, 3564491, 7128982, 10693473, 21386946]

約数ペア:

[(1, 21386946), (2, 10693473), (3, 7128982), (6, 3564491), (7, 3055278), (14, 1527639), (21, 1018426), (42, 509213), (107, 199878), (214, 99939), (321, 66626), (642, 33313), (749, 28554), (1498, 14277), (2247, 9518), (4494, 4759)]