2009018840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{383}}^1\times {\mathrm{1847}}^1$

素因数の和:2312

約数の個数: 64

約数和(自身を含む): 4598415360

約数和(自身を除く): 2589396520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 383, 568, 710, 766, 1420, 1532, 1847, 1915, 2840, 3064, 3694, 3830, 7388, 7660, 9235, 14776, 15320, 18470, 27193, 36940, 54386, 73880, 108772, 131137, 135965, 217544, 262274, 271930, 524548, 543860, 655685, 707401, 1049096, 1087720, 1311370, 1414802, 2622740, 2829604, 3537005, 5245480, 5659208, 7074010, 14148020, 28296040, 50225471, 100450942, 200901884, 251127355, 401803768, 502254710, 1004509420, 2009018840]

約数ペア:

[(1, 2009018840), (2, 1004509420), (4, 502254710), (5, 401803768), (8, 251127355), (10, 200901884), (20, 100450942), (40, 50225471), (71, 28296040), (142, 14148020), (284, 7074010), (355, 5659208), (383, 5245480), (568, 3537005), (710, 2829604), (766, 2622740), (1420, 1414802), (1532, 1311370), (1847, 1087720), (1915, 1049096), (2840, 707401), (3064, 655685), (3694, 543860), (3830, 524548), (7388, 271930), (7660, 262274), (9235, 217544), (14776, 135965), (15320, 131137), (18470, 108772), (27193, 73880), (36940, 54386)]