20285055

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{907}}^1$

素因数の和:996

約数の個数: 48

約数和(自身を含む): 40794624

約数和(自身を除く): 20509569

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 71, 105, 213, 315, 355, 497, 639, 907, 1065, 1491, 2485, 2721, 3195, 4473, 4535, 6349, 7455, 8163, 13605, 19047, 22365, 31745, 40815, 57141, 64397, 95235, 193191, 285705, 321985, 450779, 579573, 965955, 1352337, 2253895, 2897865, 4057011, 6761685, 20285055]

約数ペア:

[(1, 20285055), (3, 6761685), (5, 4057011), (7, 2897865), (9, 2253895), (15, 1352337), (21, 965955), (35, 579573), (45, 450779), (63, 321985), (71, 285705), (105, 193191), (213, 95235), (315, 64397), (355, 57141), (497, 40815), (639, 31745), (907, 22365), (1065, 19047), (1491, 13605), (2485, 8163), (2721, 7455), (3195, 6349), (4473, 4535)]