20655945

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8053}}^1$

素因数の和:8086

約数の個数: 32

約数和(自身を含む): 38659200

約数和(自身を除く): 18003255

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8053, 24159, 40265, 72477, 120795, 153007, 217431, 362385, 459021, 765035, 1087155, 1377063, 2295105, 4131189, 6885315, 20655945]

約数ペア:

[(1, 20655945), (3, 6885315), (5, 4131189), (9, 2295105), (15, 1377063), (19, 1087155), (27, 765035), (45, 459021), (57, 362385), (95, 217431), (135, 153007), (171, 120795), (285, 72477), (513, 40265), (855, 24159), (2565, 8053)]