20570825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 30474240

約数和(自身を除く): 9903415

約数列:

[1, 5, 11, 19, 25, 31, 55, 95, 127, 155, 209, 275, 341, 475, 589, 635, 775, 1045, 1397, 1705, 2413, 2945, 3175, 3937, 5225, 6479, 6985, 8525, 12065, 14725, 19685, 26543, 32395, 34925, 43307, 60325, 74803, 98425, 132715, 161975, 216535, 374015, 663575, 822833, 1082675, 1870075, 4114165, 20570825]

約数ペア:

[(1, 20570825), (5, 4114165), (11, 1870075), (19, 1082675), (25, 822833), (31, 663575), (55, 374015), (95, 216535), (127, 161975), (155, 132715), (209, 98425), (275, 74803), (341, 60325), (475, 43307), (589, 34925), (635, 32395), (775, 26543), (1045, 19685), (1397, 14725), (1705, 12065), (2413, 8525), (2945, 6985), (3175, 6479), (3937, 5225)]