28171400

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1783}}^1$

素因数の和:1878

約数の個数: 48

約数和(自身を含む): 66364800

約数和(自身を除く): 38193400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1580, 1783, 1975, 3160, 3566, 3950, 7132, 7900, 8915, 14264, 15800, 17830, 35660, 44575, 71320, 89150, 140857, 178300, 281714, 356600, 563428, 704285, 1126856, 1408570, 2817140, 3521425, 5634280, 7042850, 14085700, 28171400]

約数ペア:

[(1, 28171400), (2, 14085700), (4, 7042850), (5, 5634280), (8, 3521425), (10, 2817140), (20, 1408570), (25, 1126856), (40, 704285), (50, 563428), (79, 356600), (100, 281714), (158, 178300), (200, 140857), (316, 89150), (395, 71320), (632, 44575), (790, 35660), (1580, 17830), (1783, 15800), (1975, 14264), (3160, 8915), (3566, 7900), (3950, 7132)]