20512128940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1699}}^1\times {\mathrm{35509}}^1$

素因数の和:37234

約数の個数: 48

約数和(自身を含む): 45637452000

約数和(自身を除く): 25125323060

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1699, 3398, 6796, 8495, 16990, 28883, 33980, 35509, 57766, 71018, 115532, 142036, 144415, 177545, 288830, 355090, 577660, 603653, 710180, 1207306, 2414612, 3018265, 6036530, 12073060, 60329791, 120659582, 241319164, 301648955, 603297910, 1025606447, 1206595820, 2051212894, 4102425788, 5128032235, 10256064470, 20512128940]

約数ペア:

[(1, 20512128940), (2, 10256064470), (4, 5128032235), (5, 4102425788), (10, 2051212894), (17, 1206595820), (20, 1025606447), (34, 603297910), (68, 301648955), (85, 241319164), (170, 120659582), (340, 60329791), (1699, 12073060), (3398, 6036530), (6796, 3018265), (8495, 2414612), (16990, 1207306), (28883, 710180), (33980, 603653), (35509, 577660), (57766, 355090), (71018, 288830), (115532, 177545), (142036, 144415)]