20280781080

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{32321}}^1$

素因数の和:32431

約数の個数: 256

約数和(自身を含む): 78193382400

約数和(自身を除く): 57912601320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 83, 84, 90, 105, 108, 120, 126, 135, 140, 166, 168, 180, 189, 210, 216, 249, 252, 270, 280, 315, 332, 360, 378, 415, 420, 498, 504, 540, 581, 630, 664, 747, 756, 830, 840, 945, 996, 1080, 1162, 1245, 1260, 1494, 1512, 1660, 1743, 1890, 1992, 2241, 2324, 2490, 2520, 2905, 2988, 3320, 3486, 3735, 3780, 4482, 4648, 4980, 5229, 5810, 5976, 6972, 7470, 7560, 8715, 8964, 9960, 10458, 11205, 11620, 13944, 14940, 15687, 17430, 17928, 20916, 22410, 23240, 26145, 29880, 31374, 32321, 34860, 41832, 44820, 52290, 62748, 64642, 69720, 78435, 89640, 96963, 104580, 125496, 129284, 156870, 161605, 193926, 209160, 226247, 258568, 290889, 313740, 323210, 387852, 452494, 484815, 581778, 627480, 646420, 678741, 775704, 872667, 904988, 969630, 1131235, 1163556, 1292840, 1357482, 1454445, 1745334, 1809976, 1939260, 2036223, 2262470, 2327112, 2682643, 2714964, 2908890, 3393705, 3490668, 3878520, 4072446, 4363335, 4524940, 5365286, 5429928, 5817780, 6108669, 6787410, 6981336, 8047929, 8144892, 8726670, 9049880, 10181115, 10730572, 11635560, 12217338, 13413215, 13574820, 16095858, 16289784, 17453340, 18778501, 20362230, 21461144, 24143787, 24434676, 26826430, 27149640, 30543345, 32191716, 34906680, 37557002, 40239645, 40724460, 48287574, 48869352, 53652860, 56335503, 61086690, 64383432, 72431361, 75114004, 80479290, 81448920, 93892505, 96575148, 107305720, 112671006, 120718935, 122173380, 144862722, 150228008, 160958580, 169006509, 187785010, 193150296, 225342012, 241437870, 244346760, 281677515, 289725444, 321917160, 338013018, 362156805, 375570020, 450684024, 482875740, 507019527, 563355030, 579450888, 676026036, 724313610, 751140040, 845032545, 965751480, 1014039054, 1126710060, 1352052072, 1448627220, 1690065090, 2028078108, 2253420120, 2535097635, 2897254440, 3380130180, 4056156216, 5070195270, 6760260360, 10140390540, 20280781080]

約数ペア:

[(1, 20280781080), (2, 10140390540), (3, 6760260360), (4, 5070195270), (5, 4056156216), (6, 3380130180), (7, 2897254440), (8, 2535097635), (9, 2253420120), (10, 2028078108), (12, 1690065090), (14, 1448627220), (15, 1352052072), (18, 1126710060), (20, 1014039054), (21, 965751480), (24, 845032545), (27, 751140040), (28, 724313610), (30, 676026036), (35, 579450888), (36, 563355030), (40, 507019527), (42, 482875740), (45, 450684024), (54, 375570020), (56, 362156805), (60, 338013018), (63, 321917160), (70, 289725444), (72, 281677515), (83, 244346760), (84, 241437870), (90, 225342012), (105, 193150296), (108, 187785010), (120, 169006509), (126, 160958580), (135, 150228008), (140, 144862722), (166, 122173380), (168, 120718935), (180, 112671006), (189, 107305720), (210, 96575148), (216, 93892505), (249, 81448920), (252, 80479290), (270, 75114004), (280, 72431361), (315, 64383432), (332, 61086690), (360, 56335503), (378, 53652860), (415, 48869352), (420, 48287574), (498, 40724460), (504, 40239645), (540, 37557002), (581, 34906680), (630, 32191716), (664, 30543345), (747, 27149640), (756, 26826430), (830, 24434676), (840, 24143787), (945, 21461144), (996, 20362230), (1080, 18778501), (1162, 17453340), (1245, 16289784), (1260, 16095858), (1494, 13574820), (1512, 13413215), (1660, 12217338), (1743, 11635560), (1890, 10730572), (1992, 10181115), (2241, 9049880), (2324, 8726670), (2490, 8144892), (2520, 8047929), (2905, 6981336), (2988, 6787410), (3320, 6108669), (3486, 5817780), (3735, 5429928), (3780, 5365286), (4482, 4524940), (4648, 4363335), (4980, 4072446), (5229, 3878520), (5810, 3490668), (5976, 3393705), (6972, 2908890), (7470, 2714964), (7560, 2682643), (8715, 2327112), (8964, 2262470), (9960, 2036223), (10458, 1939260), (11205, 1809976), (11620, 1745334), (13944, 1454445), (14940, 1357482), (15687, 1292840), (17430, 1163556), (17928, 1131235), (20916, 969630), (22410, 904988), (23240, 872667), (26145, 775704), (29880, 678741), (31374, 646420), (32321, 627480), (34860, 581778), (41832, 484815), (44820, 452494), (52290, 387852), (62748, 323210), (64642, 313740), (69720, 290889), (78435, 258568), (89640, 226247), (96963, 209160), (104580, 193926), (125496, 161605), (129284, 156870)]