1809945

素因数分解:

$3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:167

約数の個数: 40

約数和(自身を含む): 3354120

約数和(自身を除く): 1544175

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 109, 123, 135, 205, 327, 369, 405, 545, 615, 981, 1107, 1635, 1845, 2943, 3321, 4469, 4905, 5535, 8829, 13407, 14715, 16605, 22345, 40221, 44145, 67035, 120663, 201105, 361989, 603315, 1809945]

約数ペア:

[(1, 1809945), (3, 603315), (5, 361989), (9, 201105), (15, 120663), (27, 67035), (41, 44145), (45, 40221), (81, 22345), (109, 16605), (123, 14715), (135, 13407), (205, 8829), (327, 5535), (369, 4905), (405, 4469), (545, 3321), (615, 2943), (981, 1845), (1107, 1635)]