20656600

素因数分解:

$2^3\times 5^2\times {\mathrm{179}}^1\times {\mathrm{577}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 48378600

約数和(自身を除く): 27722000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 179, 200, 358, 577, 716, 895, 1154, 1432, 1790, 2308, 2885, 3580, 4475, 4616, 5770, 7160, 8950, 11540, 14425, 17900, 23080, 28850, 35800, 57700, 103283, 115400, 206566, 413132, 516415, 826264, 1032830, 2065660, 2582075, 4131320, 5164150, 10328300, 20656600]

約数ペア:

[(1, 20656600), (2, 10328300), (4, 5164150), (5, 4131320), (8, 2582075), (10, 2065660), (20, 1032830), (25, 826264), (40, 516415), (50, 413132), (100, 206566), (179, 115400), (200, 103283), (358, 57700), (577, 35800), (716, 28850), (895, 23080), (1154, 17900), (1432, 14425), (1790, 11540), (2308, 8950), (2885, 7160), (3580, 5770), (4475, 4616)]