81682020

素因数分解:

$2^2\times 3^5\times 5^1\times 7^5$

素因数の和:59

約数の個数: 216

約数和(自身を含む): 299767104

約数和(自身を除く): 218085084

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 243, 245, 252, 270, 294, 315, 324, 343, 378, 405, 420, 441, 486, 490, 540, 567, 588, 630, 686, 735, 756, 810, 882, 945, 972, 980, 1029, 1134, 1215, 1260, 1323, 1372, 1470, 1620, 1701, 1715, 1764, 1890, 2058, 2205, 2268, 2401, 2430, 2646, 2835, 2940, 3087, 3402, 3430, 3780, 3969, 4116, 4410, 4802, 4860, 5145, 5292, 5670, 6174, 6615, 6804, 6860, 7203, 7938, 8505, 8820, 9261, 9604, 10290, 11340, 11907, 12005, 12348, 13230, 14406, 15435, 15876, 16807, 17010, 18522, 19845, 20580, 21609, 23814, 24010, 26460, 27783, 28812, 30870, 33614, 34020, 36015, 37044, 39690, 43218, 46305, 47628, 48020, 50421, 55566, 59535, 61740, 64827, 67228, 72030, 79380, 83349, 84035, 86436, 92610, 100842, 108045, 111132, 119070, 129654, 138915, 144060, 151263, 166698, 168070, 185220, 194481, 201684, 216090, 238140, 252105, 259308, 277830, 302526, 324135, 333396, 336140, 388962, 416745, 432180, 453789, 504210, 555660, 583443, 605052, 648270, 756315, 777924, 833490, 907578, 972405, 1008420, 1166886, 1296540, 1361367, 1512630, 1666980, 1815156, 1944810, 2268945, 2333772, 2722734, 2917215, 3025260, 3889620, 4084101, 4537890, 5445468, 5834430, 6806835, 8168202, 9075780, 11668860, 13613670, 16336404, 20420505, 27227340, 40841010, 81682020]

約数ペア:

[(1, 81682020), (2, 40841010), (3, 27227340), (4, 20420505), (5, 16336404), (6, 13613670), (7, 11668860), (9, 9075780), (10, 8168202), (12, 6806835), (14, 5834430), (15, 5445468), (18, 4537890), (20, 4084101), (21, 3889620), (27, 3025260), (28, 2917215), (30, 2722734), (35, 2333772), (36, 2268945), (42, 1944810), (45, 1815156), (49, 1666980), (54, 1512630), (60, 1361367), (63, 1296540), (70, 1166886), (81, 1008420), (84, 972405), (90, 907578), (98, 833490), (105, 777924), (108, 756315), (126, 648270), (135, 605052), (140, 583443), (147, 555660), (162, 504210), (180, 453789), (189, 432180), (196, 416745), (210, 388962), (243, 336140), (245, 333396), (252, 324135), (270, 302526), (294, 277830), (315, 259308), (324, 252105), (343, 238140), (378, 216090), (405, 201684), (420, 194481), (441, 185220), (486, 168070), (490, 166698), (540, 151263), (567, 144060), (588, 138915), (630, 129654), (686, 119070), (735, 111132), (756, 108045), (810, 100842), (882, 92610), (945, 86436), (972, 84035), (980, 83349), (1029, 79380), (1134, 72030), (1215, 67228), (1260, 64827), (1323, 61740), (1372, 59535), (1470, 55566), (1620, 50421), (1701, 48020), (1715, 47628), (1764, 46305), (1890, 43218), (2058, 39690), (2205, 37044), (2268, 36015), (2401, 34020), (2430, 33614), (2646, 30870), (2835, 28812), (2940, 27783), (3087, 26460), (3402, 24010), (3430, 23814), (3780, 21609), (3969, 20580), (4116, 19845), (4410, 18522), (4802, 17010), (4860, 16807), (5145, 15876), (5292, 15435), (5670, 14406), (6174, 13230), (6615, 12348), (6804, 12005), (6860, 11907), (7203, 11340), (7938, 10290), (8505, 9604), (8820, 9261)]