28002100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:497

約数の個数: 72

約数和(自身を含む): 70273280

約数和(自身を除く): 42271180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 109, 140, 175, 218, 350, 367, 436, 545, 700, 734, 763, 1090, 1468, 1526, 1835, 2180, 2569, 2725, 3052, 3670, 3815, 5138, 5450, 7340, 7630, 9175, 10276, 10900, 12845, 15260, 18350, 19075, 25690, 36700, 38150, 40003, 51380, 64225, 76300, 80006, 128450, 160012, 200015, 256900, 280021, 400030, 560042, 800060, 1000075, 1120084, 1400105, 2000150, 2800210, 4000300, 5600420, 7000525, 14001050, 28002100]

約数ペア:

[(1, 28002100), (2, 14001050), (4, 7000525), (5, 5600420), (7, 4000300), (10, 2800210), (14, 2000150), (20, 1400105), (25, 1120084), (28, 1000075), (35, 800060), (50, 560042), (70, 400030), (100, 280021), (109, 256900), (140, 200015), (175, 160012), (218, 128450), (350, 80006), (367, 76300), (436, 64225), (545, 51380), (700, 40003), (734, 38150), (763, 36700), (1090, 25690), (1468, 19075), (1526, 18350), (1835, 15260), (2180, 12845), (2569, 10900), (2725, 10276), (3052, 9175), (3670, 7630), (3815, 7340), (5138, 5450)]