21068828

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 21509092

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 109, 191, 218, 253, 382, 436, 506, 764, 1012, 1199, 2101, 2398, 2507, 4202, 4393, 4796, 5014, 8404, 8786, 10028, 17572, 20819, 27577, 41638, 48323, 55154, 83276, 96646, 110308, 193292, 229009, 458018, 478837, 916036, 957674, 1915348, 5267207, 10534414, 21068828]

約数ペア:

[(1, 21068828), (2, 10534414), (4, 5267207), (11, 1915348), (22, 957674), (23, 916036), (44, 478837), (46, 458018), (92, 229009), (109, 193292), (191, 110308), (218, 96646), (253, 83276), (382, 55154), (436, 48323), (506, 41638), (764, 27577), (1012, 20819), (1199, 17572), (2101, 10028), (2398, 8786), (2507, 8404), (4202, 5014), (4393, 4796)]