21000742565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1\times {\mathrm{19301}}^1$

素因数の和:19661

約数の個数: 32

約数和(自身を含む): 27972767232

約数和(自身を除く): 6972024667

約数列:

[1, 5, 11, 55, 73, 271, 365, 803, 1355, 2981, 4015, 14905, 19301, 19783, 96505, 98915, 212311, 217613, 1061555, 1088065, 1408973, 5230571, 7044865, 15498703, 26152855, 57536281, 77493515, 287681405, 381831683, 1909158415, 4200148513, 21000742565]

約数ペア:

[(1, 21000742565), (5, 4200148513), (11, 1909158415), (55, 381831683), (73, 287681405), (271, 77493515), (365, 57536281), (803, 26152855), (1355, 15498703), (2981, 7044865), (4015, 5230571), (14905, 1408973), (19301, 1088065), (19783, 1061555), (96505, 217613), (98915, 212311)]