28080780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:208

約数の個数: 192

約数和(自身を含む): 100101120

約数和(自身を除く): 72020340

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 37, 39, 42, 52, 60, 65, 70, 74, 78, 84, 91, 105, 111, 130, 139, 140, 148, 156, 182, 185, 195, 210, 222, 259, 260, 273, 278, 364, 370, 390, 417, 420, 444, 455, 481, 518, 546, 555, 556, 695, 740, 777, 780, 834, 910, 962, 973, 1036, 1092, 1110, 1295, 1365, 1390, 1443, 1554, 1668, 1807, 1820, 1924, 1946, 2085, 2220, 2405, 2590, 2730, 2780, 2886, 2919, 3108, 3367, 3614, 3885, 3892, 4170, 4810, 4865, 5143, 5180, 5421, 5460, 5772, 5838, 6734, 7215, 7228, 7770, 8340, 9035, 9620, 9730, 10101, 10286, 10842, 11676, 12649, 13468, 14430, 14595, 15429, 15540, 16835, 18070, 19460, 20202, 20572, 21684, 25298, 25715, 27105, 28860, 29190, 30858, 33670, 36001, 36140, 37947, 40404, 50505, 50596, 51430, 54210, 58380, 61716, 63245, 66859, 67340, 72002, 75894, 77145, 101010, 102860, 108003, 108420, 126490, 133718, 144004, 151788, 154290, 180005, 189735, 200577, 202020, 216006, 252980, 267436, 308580, 334295, 360010, 379470, 401154, 432012, 468013, 540015, 668590, 720020, 758940, 802308, 936026, 1002885, 1080030, 1337180, 1404039, 1872052, 2005770, 2160060, 2340065, 2808078, 4011540, 4680130, 5616156, 7020195, 9360260, 14040390, 28080780]

約数ペア:

[(1, 28080780), (2, 14040390), (3, 9360260), (4, 7020195), (5, 5616156), (6, 4680130), (7, 4011540), (10, 2808078), (12, 2340065), (13, 2160060), (14, 2005770), (15, 1872052), (20, 1404039), (21, 1337180), (26, 1080030), (28, 1002885), (30, 936026), (35, 802308), (37, 758940), (39, 720020), (42, 668590), (52, 540015), (60, 468013), (65, 432012), (70, 401154), (74, 379470), (78, 360010), (84, 334295), (91, 308580), (105, 267436), (111, 252980), (130, 216006), (139, 202020), (140, 200577), (148, 189735), (156, 180005), (182, 154290), (185, 151788), (195, 144004), (210, 133718), (222, 126490), (259, 108420), (260, 108003), (273, 102860), (278, 101010), (364, 77145), (370, 75894), (390, 72002), (417, 67340), (420, 66859), (444, 63245), (455, 61716), (481, 58380), (518, 54210), (546, 51430), (555, 50596), (556, 50505), (695, 40404), (740, 37947), (777, 36140), (780, 36001), (834, 33670), (910, 30858), (962, 29190), (973, 28860), (1036, 27105), (1092, 25715), (1110, 25298), (1295, 21684), (1365, 20572), (1390, 20202), (1443, 19460), (1554, 18070), (1668, 16835), (1807, 15540), (1820, 15429), (1924, 14595), (1946, 14430), (2085, 13468), (2220, 12649), (2405, 11676), (2590, 10842), (2730, 10286), (2780, 10101), (2886, 9730), (2919, 9620), (3108, 9035), (3367, 8340), (3614, 7770), (3885, 7228), (3892, 7215), (4170, 6734), (4810, 5838), (4865, 5772), (5143, 5460), (5180, 5421)]