2138881.00000000

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{463}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 145770240

約数和(自身を除く): 78144460

約数列:

[1, 2, 4, 5, 10, 20, 67, 109, 134, 218, 268, 335, 436, 463, 545, 670, 926, 1090, 1340, 1852, 2180, 2315, 4630, 7303, 9260, 14606, 29212, 31021, 36515, 50467, 62042, 73030, 100934, 124084, 146060, 155105, 201868, 252335, 310210, 504670, 620420, 1009340, 3381289, 6762578, 13525156, 16906445, 33812890, 67625780]

約数ペア:

[(1, 67625780), (2, 33812890), (4, 16906445), (5, 13525156), (10, 6762578), (20, 3381289), (67, 1009340), (109, 620420), (134, 504670), (218, 310210), (268, 252335), (335, 201868), (436, 155105), (463, 146060), (545, 124084), (670, 100934), (926, 73030), (1090, 62042), (1340, 50467), (1852, 36515), (2180, 31021), (2315, 29212), (4630, 14606), (7303, 9260)]