28207900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{683}}^1$

素因数の和:763

約数の個数: 72

約数和(自身を含む): 71245440

約数和(自身を除く): 43037540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 59, 70, 100, 118, 140, 175, 236, 295, 350, 413, 590, 683, 700, 826, 1180, 1366, 1475, 1652, 2065, 2732, 2950, 3415, 4130, 4781, 5900, 6830, 8260, 9562, 10325, 13660, 17075, 19124, 20650, 23905, 34150, 40297, 41300, 47810, 68300, 80594, 95620, 119525, 161188, 201485, 239050, 282079, 402970, 478100, 564158, 805940, 1007425, 1128316, 1410395, 2014850, 2820790, 4029700, 5641580, 7051975, 14103950, 28207900]

約数ペア:

[(1, 28207900), (2, 14103950), (4, 7051975), (5, 5641580), (7, 4029700), (10, 2820790), (14, 2014850), (20, 1410395), (25, 1128316), (28, 1007425), (35, 805940), (50, 564158), (59, 478100), (70, 402970), (100, 282079), (118, 239050), (140, 201485), (175, 161188), (236, 119525), (295, 95620), (350, 80594), (413, 68300), (590, 47810), (683, 41300), (700, 40297), (826, 34150), (1180, 23905), (1366, 20650), (1475, 19124), (1652, 17075), (2065, 13660), (2732, 10325), (2950, 9562), (3415, 8260), (4130, 6830), (4781, 5900)]