256872

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 806400

約数和(自身を除く): 549528

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 66, 77, 84, 88, 132, 139, 154, 168, 231, 264, 278, 308, 417, 462, 556, 616, 834, 924, 973, 1112, 1529, 1668, 1848, 1946, 2919, 3058, 3336, 3892, 4587, 5838, 6116, 7784, 9174, 10703, 11676, 12232, 18348, 21406, 23352, 32109, 36696, 42812, 64218, 85624, 128436, 256872]

約数ペア:

[(1, 256872), (2, 128436), (3, 85624), (4, 64218), (6, 42812), (7, 36696), (8, 32109), (11, 23352), (12, 21406), (14, 18348), (21, 12232), (22, 11676), (24, 10703), (28, 9174), (33, 7784), (42, 6116), (44, 5838), (56, 4587), (66, 3892), (77, 3336), (84, 3058), (88, 2919), (132, 1946), (139, 1848), (154, 1668), (168, 1529), (231, 1112), (264, 973), (278, 924), (308, 834), (417, 616), (462, 556)]