256956

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:63

約数の個数: 72

約数和(自身を含む): 766080

約数和(自身を除く): 509124

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 23, 28, 38, 42, 46, 49, 57, 69, 76, 84, 92, 98, 114, 133, 138, 147, 161, 196, 228, 266, 276, 294, 322, 399, 437, 483, 532, 588, 644, 798, 874, 931, 966, 1127, 1311, 1596, 1748, 1862, 1932, 2254, 2622, 2793, 3059, 3381, 3724, 4508, 5244, 5586, 6118, 6762, 9177, 11172, 12236, 13524, 18354, 21413, 36708, 42826, 64239, 85652, 128478, 256956]

約数ペア:

[(1, 256956), (2, 128478), (3, 85652), (4, 64239), (6, 42826), (7, 36708), (12, 21413), (14, 18354), (19, 13524), (21, 12236), (23, 11172), (28, 9177), (38, 6762), (42, 6118), (46, 5586), (49, 5244), (57, 4508), (69, 3724), (76, 3381), (84, 3059), (92, 2793), (98, 2622), (114, 2254), (133, 1932), (138, 1862), (147, 1748), (161, 1596), (196, 1311), (228, 1127), (266, 966), (276, 931), (294, 874), (322, 798), (399, 644), (437, 588), (483, 532)]