20755140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49417}}^1$

素因数の和:49436

約数の個数: 48

約数和(自身を含む): 66417792

約数和(自身を除く): 45662652

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49417, 98834, 148251, 197668, 247085, 296502, 345919, 494170, 593004, 691838, 741255, 988340, 1037757, 1383676, 1482510, 1729595, 2075514, 2965020, 3459190, 4151028, 5188785, 6918380, 10377570, 20755140]

約数ペア:

[(1, 20755140), (2, 10377570), (3, 6918380), (4, 5188785), (5, 4151028), (6, 3459190), (7, 2965020), (10, 2075514), (12, 1729595), (14, 1482510), (15, 1383676), (20, 1037757), (21, 988340), (28, 741255), (30, 691838), (35, 593004), (42, 494170), (60, 345919), (70, 296502), (84, 247085), (105, 197668), (140, 148251), (210, 98834), (420, 49417)]