256651668

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{499}}^1$

素因数の和:686

約数の個数: 144

約数和(自身を含む): 805168000

約数和(自身を除く): 548516332

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 157, 182, 234, 252, 273, 314, 364, 468, 471, 499, 546, 628, 819, 942, 998, 1092, 1099, 1413, 1497, 1638, 1884, 1996, 2041, 2198, 2826, 2994, 3276, 3297, 3493, 4082, 4396, 4491, 5652, 5988, 6123, 6487, 6594, 6986, 8164, 8982, 9891, 10479, 12246, 12974, 13188, 13972, 14287, 17964, 18369, 19461, 19782, 20958, 24492, 25948, 28574, 31437, 36738, 38922, 39564, 41916, 42861, 45409, 57148, 58383, 62874, 73476, 77844, 78343, 85722, 90818, 116766, 125748, 128583, 136227, 156686, 171444, 181636, 233532, 235029, 257166, 272454, 313372, 408681, 470058, 514332, 544908, 548401, 705087, 817362, 940116, 1018459, 1096802, 1410174, 1634724, 1645203, 2036918, 2193604, 2820348, 3055377, 3290406, 4073836, 4935609, 6110754, 6580812, 7129213, 9166131, 9871218, 12221508, 14258426, 18332262, 19742436, 21387639, 28516852, 36664524, 42775278, 64162917, 85550556, 128325834, 256651668]

約数ペア:

[(1, 256651668), (2, 128325834), (3, 85550556), (4, 64162917), (6, 42775278), (7, 36664524), (9, 28516852), (12, 21387639), (13, 19742436), (14, 18332262), (18, 14258426), (21, 12221508), (26, 9871218), (28, 9166131), (36, 7129213), (39, 6580812), (42, 6110754), (52, 4935609), (63, 4073836), (78, 3290406), (84, 3055377), (91, 2820348), (117, 2193604), (126, 2036918), (156, 1645203), (157, 1634724), (182, 1410174), (234, 1096802), (252, 1018459), (273, 940116), (314, 817362), (364, 705087), (468, 548401), (471, 544908), (499, 514332), (546, 470058), (628, 408681), (819, 313372), (942, 272454), (998, 257166), (1092, 235029), (1099, 233532), (1413, 181636), (1497, 171444), (1638, 156686), (1884, 136227), (1996, 128583), (2041, 125748), (2198, 116766), (2826, 90818), (2994, 85722), (3276, 78343), (3297, 77844), (3493, 73476), (4082, 62874), (4396, 58383), (4491, 57148), (5652, 45409), (5988, 42861), (6123, 41916), (6487, 39564), (6594, 38922), (6986, 36738), (8164, 31437), (8982, 28574), (9891, 25948), (10479, 24492), (12246, 20958), (12974, 19782), (13188, 19461), (13972, 18369), (14287, 17964)]