20654900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1553}}^1$

素因数の和:1593

約数の個数: 72

約数和(自身を含む): 53954880

約数和(自身を除く): 33299980

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 70, 76, 95, 100, 133, 140, 175, 190, 266, 350, 380, 475, 532, 665, 700, 950, 1330, 1553, 1900, 2660, 3106, 3325, 6212, 6650, 7765, 10871, 13300, 15530, 21742, 29507, 31060, 38825, 43484, 54355, 59014, 77650, 108710, 118028, 147535, 155300, 206549, 217420, 271775, 295070, 413098, 543550, 590140, 737675, 826196, 1032745, 1087100, 1475350, 2065490, 2950700, 4130980, 5163725, 10327450, 20654900]

約数ペア:

[(1, 20654900), (2, 10327450), (4, 5163725), (5, 4130980), (7, 2950700), (10, 2065490), (14, 1475350), (19, 1087100), (20, 1032745), (25, 826196), (28, 737675), (35, 590140), (38, 543550), (50, 413098), (70, 295070), (76, 271775), (95, 217420), (100, 206549), (133, 155300), (140, 147535), (175, 118028), (190, 108710), (266, 77650), (350, 59014), (380, 54355), (475, 43484), (532, 38825), (665, 31060), (700, 29507), (950, 21742), (1330, 15530), (1553, 13300), (1900, 10871), (2660, 7765), (3106, 6650), (3325, 6212)]