2171427280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{2221}}^1$

素因数の和:2357

約数の個数: 120

約数和(自身を含む): 5606719272

約数和(自身を除く): 3435291992

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 101, 110, 121, 176, 202, 220, 242, 404, 440, 484, 505, 605, 808, 880, 968, 1010, 1111, 1210, 1616, 1936, 2020, 2221, 2222, 2420, 4040, 4442, 4444, 4840, 5555, 8080, 8884, 8888, 9680, 11105, 11110, 12221, 17768, 17776, 22210, 22220, 24431, 24442, 35536, 44420, 44440, 48862, 48884, 61105, 88840, 88880, 97724, 97768, 122155, 122210, 177680, 195448, 195536, 224321, 244310, 244420, 268741, 390896, 448642, 488620, 488840, 537482, 897284, 977240, 977680, 1074964, 1121605, 1343705, 1794568, 1954480, 2149928, 2243210, 2467531, 2687410, 3589136, 4299856, 4486420, 4935062, 5374820, 8972840, 9870124, 10749640, 12337655, 17945680, 19740248, 21499280, 24675310, 27142841, 39480496, 49350620, 54285682, 98701240, 108571364, 135714205, 197402480, 217142728, 271428410, 434285456, 542856820, 1085713640, 2171427280]

約数ペア:

[(1, 2171427280), (2, 1085713640), (4, 542856820), (5, 434285456), (8, 271428410), (10, 217142728), (11, 197402480), (16, 135714205), (20, 108571364), (22, 98701240), (40, 54285682), (44, 49350620), (55, 39480496), (80, 27142841), (88, 24675310), (101, 21499280), (110, 19740248), (121, 17945680), (176, 12337655), (202, 10749640), (220, 9870124), (242, 8972840), (404, 5374820), (440, 4935062), (484, 4486420), (505, 4299856), (605, 3589136), (808, 2687410), (880, 2467531), (968, 2243210), (1010, 2149928), (1111, 1954480), (1210, 1794568), (1616, 1343705), (1936, 1121605), (2020, 1074964), (2221, 977680), (2222, 977240), (2420, 897284), (4040, 537482), (4442, 488840), (4444, 488620), (4840, 448642), (5555, 390896), (8080, 268741), (8884, 244420), (8888, 244310), (9680, 224321), (11105, 195536), (11110, 195448), (12221, 177680), (17768, 122210), (17776, 122155), (22210, 97768), (22220, 97724), (24431, 88880), (24442, 88840), (35536, 61105), (44420, 48884), (44440, 48862)]