81028894580

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1621}}^1\times {\mathrm{19079}}^1$

素因数の和:20840

約数の個数: 48

約数和(自身を含む): 171574381440

約数和(自身を除く): 90545486860

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 1621, 2620, 3242, 6484, 8105, 16210, 19079, 32420, 38158, 76316, 95395, 190790, 212351, 381580, 424702, 849404, 1061755, 2123510, 2499349, 4247020, 4998698, 9997396, 12496745, 24993490, 30927059, 49986980, 61854118, 123708236, 154635295, 309270590, 618541180, 4051444729, 8102889458, 16205778916, 20257223645, 40514447290, 81028894580]

約数ペア:

[(1, 81028894580), (2, 40514447290), (4, 20257223645), (5, 16205778916), (10, 8102889458), (20, 4051444729), (131, 618541180), (262, 309270590), (524, 154635295), (655, 123708236), (1310, 61854118), (1621, 49986980), (2620, 30927059), (3242, 24993490), (6484, 12496745), (8105, 9997396), (16210, 4998698), (19079, 4247020), (32420, 2499349), (38158, 2123510), (76316, 1061755), (95395, 849404), (190790, 424702), (212351, 381580)]