20419756

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{293}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 23045204

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 131, 133, 262, 266, 293, 524, 532, 586, 917, 1172, 1834, 2051, 2489, 3668, 4102, 4978, 5567, 8204, 9956, 11134, 17423, 22268, 34846, 38383, 38969, 69692, 76766, 77938, 153532, 155876, 268681, 537362, 729277, 1074724, 1458554, 2917108, 5104939, 10209878, 20419756]

約数ペア:

[(1, 20419756), (2, 10209878), (4, 5104939), (7, 2917108), (14, 1458554), (19, 1074724), (28, 729277), (38, 537362), (76, 268681), (131, 155876), (133, 153532), (262, 77938), (266, 76766), (293, 69692), (524, 38969), (532, 38383), (586, 34846), (917, 22268), (1172, 17423), (1834, 11134), (2051, 9956), (2489, 8204), (3668, 5567), (4102, 4978)]