1640205

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 3354624

約数和(自身を除く): 1714419

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 41, 45, 63, 105, 123, 127, 205, 287, 315, 369, 381, 615, 635, 861, 889, 1143, 1435, 1845, 1905, 2583, 2667, 4305, 4445, 5207, 5715, 8001, 12915, 13335, 15621, 26035, 36449, 40005, 46863, 78105, 109347, 182245, 234315, 328041, 546735, 1640205]

約数ペア:

[(1, 1640205), (3, 546735), (5, 328041), (7, 234315), (9, 182245), (15, 109347), (21, 78105), (35, 46863), (41, 40005), (45, 36449), (63, 26035), (105, 15621), (123, 13335), (127, 12915), (205, 8001), (287, 5715), (315, 5207), (369, 4445), (381, 4305), (615, 2667), (635, 2583), (861, 1905), (889, 1845), (1143, 1435)]