1666980

素因数分解:

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

素因数の和:45

約数の個数: 144

約数和(自身を含む): 6115200

約数和(自身を除く): 4448220

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, 2430, 2646, 2835, 2940, 3087, 3402, 3430, 3780, 3969, 4116, 4410, 4860, 5145, 5292, 5670, 6174, 6615, 6804, 6860, 7938, 8505, 8820, 9261, 10290, 11340, 11907, 12348, 13230, 15435, 15876, 17010, 18522, 19845, 20580, 23814, 26460, 27783, 30870, 34020, 37044, 39690, 46305, 47628, 55566, 59535, 61740, 79380, 83349, 92610, 111132, 119070, 138915, 166698, 185220, 238140, 277830, 333396, 416745, 555660, 833490, 1666980]

約数ペア:

[(1, 1666980), (2, 833490), (3, 555660), (4, 416745), (5, 333396), (6, 277830), (7, 238140), (9, 185220), (10, 166698), (12, 138915), (14, 119070), (15, 111132), (18, 92610), (20, 83349), (21, 79380), (27, 61740), (28, 59535), (30, 55566), (35, 47628), (36, 46305), (42, 39690), (45, 37044), (49, 34020), (54, 30870), (60, 27783), (63, 26460), (70, 23814), (81, 20580), (84, 19845), (90, 18522), (98, 17010), (105, 15876), (108, 15435), (126, 13230), (135, 12348), (140, 11907), (147, 11340), (162, 10290), (180, 9261), (189, 8820), (196, 8505), (210, 7938), (243, 6860), (245, 6804), (252, 6615), (270, 6174), (294, 5670), (315, 5292), (324, 5145), (343, 4860), (378, 4410), (405, 4116), (420, 3969), (441, 3780), (486, 3430), (490, 3402), (540, 3087), (567, 2940), (588, 2835), (630, 2646), (686, 2430), (735, 2268), (756, 2205), (810, 2058), (882, 1890), (945, 1764), (972, 1715), (980, 1701), (1029, 1620), (1134, 1470), (1215, 1372), (1260, 1323)]