21000307080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{317609}}^1$

素因数の和:317671

約数の個数: 128

約数和(自身を含む): 68603760000

約数和(自身を除く): 47603452920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 29, 30, 38, 40, 57, 58, 60, 76, 87, 95, 114, 116, 120, 145, 152, 174, 190, 228, 232, 285, 290, 348, 380, 435, 456, 551, 570, 580, 696, 760, 870, 1102, 1140, 1160, 1653, 1740, 2204, 2280, 2755, 3306, 3480, 4408, 5510, 6612, 8265, 11020, 13224, 16530, 22040, 33060, 66120, 317609, 635218, 952827, 1270436, 1588045, 1905654, 2540872, 3176090, 3811308, 4764135, 6034571, 6352180, 7622616, 9210661, 9528270, 12069142, 12704360, 18103713, 18421322, 19056540, 24138284, 27631983, 30172855, 36207426, 36842644, 38113080, 46053305, 48276568, 55263966, 60345710, 72414852, 73685288, 90518565, 92106610, 110527932, 120691420, 138159915, 144829704, 175002559, 181037130, 184213220, 221055864, 241382840, 276319830, 350005118, 362074260, 368426440, 525007677, 552639660, 700010236, 724148520, 875012795, 1050015354, 1105279320, 1400020472, 1750025590, 2100030708, 2625038385, 3500051180, 4200061416, 5250076770, 7000102360, 10500153540, 21000307080]

約数ペア:

[(1, 21000307080), (2, 10500153540), (3, 7000102360), (4, 5250076770), (5, 4200061416), (6, 3500051180), (8, 2625038385), (10, 2100030708), (12, 1750025590), (15, 1400020472), (19, 1105279320), (20, 1050015354), (24, 875012795), (29, 724148520), (30, 700010236), (38, 552639660), (40, 525007677), (57, 368426440), (58, 362074260), (60, 350005118), (76, 276319830), (87, 241382840), (95, 221055864), (114, 184213220), (116, 181037130), (120, 175002559), (145, 144829704), (152, 138159915), (174, 120691420), (190, 110527932), (228, 92106610), (232, 90518565), (285, 73685288), (290, 72414852), (348, 60345710), (380, 55263966), (435, 48276568), (456, 46053305), (551, 38113080), (570, 36842644), (580, 36207426), (696, 30172855), (760, 27631983), (870, 24138284), (1102, 19056540), (1140, 18421322), (1160, 18103713), (1653, 12704360), (1740, 12069142), (2204, 9528270), (2280, 9210661), (2755, 7622616), (3306, 6352180), (3480, 6034571), (4408, 4764135), (5510, 3811308), (6612, 3176090), (8265, 2540872), (11020, 1905654), (13224, 1588045), (16530, 1270436), (22040, 952827), (33060, 635218), (66120, 317609)]