20783385

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7331}}^1$

素因数の和:7355

約数の個数: 40

約数和(自身を含む): 42584256

約数和(自身を除く): 21800871

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7331, 21993, 36655, 51317, 65979, 109965, 153951, 197937, 256585, 329895, 461853, 593811, 769755, 989685, 1385559, 2309265, 2969055, 4156677, 6927795, 20783385]

約数ペア:

[(1, 20783385), (3, 6927795), (5, 4156677), (7, 2969055), (9, 2309265), (15, 1385559), (21, 989685), (27, 769755), (35, 593811), (45, 461853), (63, 329895), (81, 256585), (105, 197937), (135, 153951), (189, 109965), (315, 65979), (405, 51317), (567, 36655), (945, 21993), (2835, 7331)]