81206580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:278

約数の個数: 192

約数和(自身を含む): 284497920

約数和(自身を除く): 203291340

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 107, 130, 139, 140, 156, 182, 195, 210, 214, 260, 273, 278, 321, 364, 390, 417, 420, 428, 455, 535, 546, 556, 642, 695, 749, 780, 834, 910, 973, 1070, 1092, 1284, 1365, 1390, 1391, 1498, 1605, 1668, 1807, 1820, 1946, 2085, 2140, 2247, 2730, 2780, 2782, 2919, 2996, 3210, 3614, 3745, 3892, 4170, 4173, 4494, 4865, 5421, 5460, 5564, 5838, 6420, 6955, 7228, 7490, 8340, 8346, 8988, 9035, 9730, 9737, 10842, 11235, 11676, 12649, 13910, 14595, 14873, 14980, 16692, 18070, 19460, 19474, 20865, 21684, 22470, 25298, 27105, 27820, 29190, 29211, 29746, 36140, 37947, 38948, 41730, 44619, 44940, 48685, 50596, 54210, 58380, 58422, 59492, 63245, 74365, 75894, 83460, 89238, 97370, 104111, 108420, 116844, 126490, 146055, 148730, 151788, 178476, 189735, 193349, 194740, 208222, 223095, 252980, 292110, 297460, 312333, 379470, 386698, 416444, 446190, 520555, 580047, 584220, 624666, 758940, 773396, 892380, 966745, 1041110, 1160094, 1249332, 1353443, 1561665, 1933490, 2082220, 2320188, 2706886, 2900235, 3123330, 3866980, 4060329, 5413772, 5800470, 6246660, 6767215, 8120658, 11600940, 13534430, 16241316, 20301645, 27068860, 40603290, 81206580]

約数ペア:

[(1, 81206580), (2, 40603290), (3, 27068860), (4, 20301645), (5, 16241316), (6, 13534430), (7, 11600940), (10, 8120658), (12, 6767215), (13, 6246660), (14, 5800470), (15, 5413772), (20, 4060329), (21, 3866980), (26, 3123330), (28, 2900235), (30, 2706886), (35, 2320188), (39, 2082220), (42, 1933490), (52, 1561665), (60, 1353443), (65, 1249332), (70, 1160094), (78, 1041110), (84, 966745), (91, 892380), (105, 773396), (107, 758940), (130, 624666), (139, 584220), (140, 580047), (156, 520555), (182, 446190), (195, 416444), (210, 386698), (214, 379470), (260, 312333), (273, 297460), (278, 292110), (321, 252980), (364, 223095), (390, 208222), (417, 194740), (420, 193349), (428, 189735), (455, 178476), (535, 151788), (546, 148730), (556, 146055), (642, 126490), (695, 116844), (749, 108420), (780, 104111), (834, 97370), (910, 89238), (973, 83460), (1070, 75894), (1092, 74365), (1284, 63245), (1365, 59492), (1390, 58422), (1391, 58380), (1498, 54210), (1605, 50596), (1668, 48685), (1807, 44940), (1820, 44619), (1946, 41730), (2085, 38948), (2140, 37947), (2247, 36140), (2730, 29746), (2780, 29211), (2782, 29190), (2919, 27820), (2996, 27105), (3210, 25298), (3614, 22470), (3745, 21684), (3892, 20865), (4170, 19474), (4173, 19460), (4494, 18070), (4865, 16692), (5421, 14980), (5460, 14873), (5564, 14595), (5838, 13910), (6420, 12649), (6955, 11676), (7228, 11235), (7490, 10842), (8340, 9737), (8346, 9730), (8988, 9035)]