20894000

素因数分解:

$2^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{337}}^1$

素因数の和:391

約数の個数: 80

約数和(自身を含む): 52306176

約数和(自身を除く): 31412176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 125, 155, 200, 248, 250, 310, 337, 400, 496, 500, 620, 674, 775, 1000, 1240, 1348, 1550, 1685, 2000, 2480, 2696, 3100, 3370, 3875, 5392, 6200, 6740, 7750, 8425, 10447, 12400, 13480, 15500, 16850, 20894, 26960, 31000, 33700, 41788, 42125, 52235, 62000, 67400, 83576, 84250, 104470, 134800, 167152, 168500, 208940, 261175, 337000, 417880, 522350, 674000, 835760, 1044700, 1305875, 2089400, 2611750, 4178800, 5223500, 10447000, 20894000]

約数ペア:

[(1, 20894000), (2, 10447000), (4, 5223500), (5, 4178800), (8, 2611750), (10, 2089400), (16, 1305875), (20, 1044700), (25, 835760), (31, 674000), (40, 522350), (50, 417880), (62, 337000), (80, 261175), (100, 208940), (124, 168500), (125, 167152), (155, 134800), (200, 104470), (248, 84250), (250, 83576), (310, 67400), (337, 62000), (400, 52235), (496, 42125), (500, 41788), (620, 33700), (674, 31000), (775, 26960), (1000, 20894), (1240, 16850), (1348, 15500), (1550, 13480), (1685, 12400), (2000, 10447), (2480, 8425), (2696, 7750), (3100, 6740), (3370, 6200), (3875, 5392)]