20670615

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{311}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 41273856

約数和(自身を除く): 20603241

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 211, 311, 315, 633, 933, 1055, 1477, 1555, 1899, 2177, 2799, 3165, 4431, 4665, 6531, 7385, 9495, 10885, 13293, 13995, 19593, 22155, 32655, 65621, 66465, 97965, 196863, 328105, 459347, 590589, 984315, 1378041, 2296735, 2952945, 4134123, 6890205, 20670615]

約数ペア:

[(1, 20670615), (3, 6890205), (5, 4134123), (7, 2952945), (9, 2296735), (15, 1378041), (21, 984315), (35, 590589), (45, 459347), (63, 328105), (105, 196863), (211, 97965), (311, 66465), (315, 65621), (633, 32655), (933, 22155), (1055, 19593), (1477, 13995), (1555, 13293), (1899, 10885), (2177, 9495), (2799, 7385), (3165, 6531), (4431, 4665)]