2560005

素因数分解:

$3^5\times 5^1\times 7^2\times {\mathrm{43}}^1$

素因数の和:77

約数の個数: 72

約数和(自身を含む): 5477472

約数和(自身を除く): 2917467

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 43, 45, 49, 63, 81, 105, 129, 135, 147, 189, 215, 243, 245, 301, 315, 387, 405, 441, 567, 645, 735, 903, 945, 1161, 1215, 1323, 1505, 1701, 1935, 2107, 2205, 2709, 2835, 3483, 3969, 4515, 5805, 6321, 6615, 8127, 8505, 10449, 10535, 11907, 13545, 17415, 18963, 19845, 24381, 31605, 40635, 52245, 56889, 59535, 73143, 94815, 121905, 170667, 284445, 365715, 512001, 853335, 2560005]

約数ペア:

[(1, 2560005), (3, 853335), (5, 512001), (7, 365715), (9, 284445), (15, 170667), (21, 121905), (27, 94815), (35, 73143), (43, 59535), (45, 56889), (49, 52245), (63, 40635), (81, 31605), (105, 24381), (129, 19845), (135, 18963), (147, 17415), (189, 13545), (215, 11907), (243, 10535), (245, 10449), (301, 8505), (315, 8127), (387, 6615), (405, 6321), (441, 5805), (567, 4515), (645, 3969), (735, 3483), (903, 2835), (945, 2709), (1161, 2205), (1215, 2107), (1323, 1935), (1505, 1701)]