2798145

素因数分解:

$3^5\times 5^1\times 7^2\times {\mathrm{47}}^1$

素因数の和:81

約数の個数: 72

約数和(自身を含む): 5975424

約数和(自身を除く): 3177279

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 47, 49, 63, 81, 105, 135, 141, 147, 189, 235, 243, 245, 315, 329, 405, 423, 441, 567, 705, 735, 945, 987, 1215, 1269, 1323, 1645, 1701, 2115, 2205, 2303, 2835, 2961, 3807, 3969, 4935, 6345, 6615, 6909, 8505, 8883, 11421, 11515, 11907, 14805, 19035, 19845, 20727, 26649, 34545, 44415, 57105, 59535, 62181, 79947, 103635, 133245, 186543, 310905, 399735, 559629, 932715, 2798145]

約数ペア:

[(1, 2798145), (3, 932715), (5, 559629), (7, 399735), (9, 310905), (15, 186543), (21, 133245), (27, 103635), (35, 79947), (45, 62181), (47, 59535), (49, 57105), (63, 44415), (81, 34545), (105, 26649), (135, 20727), (141, 19845), (147, 19035), (189, 14805), (235, 11907), (243, 11515), (245, 11421), (315, 8883), (329, 8505), (405, 6909), (423, 6615), (441, 6345), (567, 4935), (705, 3969), (735, 3807), (945, 2961), (987, 2835), (1215, 2303), (1269, 2205), (1323, 2115), (1645, 1701)]