1805895

素因数分解:

$3^4\times 5^1\times 7^3\times {\mathrm{13}}^1$

素因数の和:51

約数の個数: 80

約数和(自身を含む): 4065600

約数和(自身を除く): 2259705

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 49, 63, 65, 81, 91, 105, 117, 135, 147, 189, 195, 245, 273, 315, 343, 351, 405, 441, 455, 567, 585, 637, 735, 819, 945, 1029, 1053, 1323, 1365, 1715, 1755, 1911, 2205, 2457, 2835, 3087, 3185, 3969, 4095, 4459, 5145, 5265, 5733, 6615, 7371, 9261, 9555, 12285, 13377, 15435, 17199, 19845, 22295, 27783, 28665, 36855, 40131, 46305, 51597, 66885, 85995, 120393, 138915, 200655, 257985, 361179, 601965, 1805895]

約数ペア:

[(1, 1805895), (3, 601965), (5, 361179), (7, 257985), (9, 200655), (13, 138915), (15, 120393), (21, 85995), (27, 66885), (35, 51597), (39, 46305), (45, 40131), (49, 36855), (63, 28665), (65, 27783), (81, 22295), (91, 19845), (105, 17199), (117, 15435), (135, 13377), (147, 12285), (189, 9555), (195, 9261), (245, 7371), (273, 6615), (315, 5733), (343, 5265), (351, 5145), (405, 4459), (441, 4095), (455, 3969), (567, 3185), (585, 3087), (637, 2835), (735, 2457), (819, 2205), (945, 1911), (1029, 1755), (1053, 1715), (1323, 1365)]