2784915

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{421}}^1$

素因数の和:449

約数の個数: 48

約数和(自身を含む): 5772960

約数和(自身を除く): 2988045

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 421, 441, 735, 945, 1263, 1323, 2105, 2205, 2947, 3789, 6315, 6615, 8841, 11367, 14735, 18945, 20629, 26523, 44205, 56835, 61887, 79569, 103145, 132615, 185661, 309435, 397845, 556983, 928305, 2784915]

約数ペア:

[(1, 2784915), (3, 928305), (5, 556983), (7, 397845), (9, 309435), (15, 185661), (21, 132615), (27, 103145), (35, 79569), (45, 61887), (49, 56835), (63, 44205), (105, 26523), (135, 20629), (147, 18945), (189, 14735), (245, 11367), (315, 8841), (421, 6615), (441, 6315), (735, 3789), (945, 2947), (1263, 2205), (1323, 2105)]