21615440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{29}}^1$

素因数の和:82

約数の個数: 160

約数和(自身を含む): 65352960

約数和(自身を除く): 43737520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 29, 35, 40, 44, 55, 56, 58, 70, 77, 80, 88, 110, 112, 116, 121, 140, 145, 154, 176, 203, 220, 232, 242, 280, 290, 308, 319, 385, 406, 440, 464, 484, 560, 580, 605, 616, 638, 770, 812, 847, 880, 968, 1015, 1160, 1210, 1232, 1276, 1331, 1540, 1595, 1624, 1694, 1936, 2030, 2233, 2320, 2420, 2552, 2662, 3080, 3190, 3248, 3388, 3509, 4060, 4235, 4466, 4840, 5104, 5324, 6160, 6380, 6655, 6776, 7018, 8120, 8470, 8932, 9317, 9680, 10648, 11165, 12760, 13310, 13552, 14036, 16240, 16940, 17545, 17864, 18634, 21296, 22330, 24563, 25520, 26620, 28072, 33880, 35090, 35728, 37268, 38599, 44660, 46585, 49126, 53240, 56144, 67760, 70180, 74536, 77198, 89320, 93170, 98252, 106480, 122815, 140360, 149072, 154396, 178640, 186340, 192995, 196504, 245630, 270193, 280720, 308792, 372680, 385990, 393008, 491260, 540386, 617584, 745360, 771980, 982520, 1080772, 1350965, 1543960, 1965040, 2161544, 2701930, 3087920, 4323088, 5403860, 10807720, 21615440]

約数ペア:

[(1, 21615440), (2, 10807720), (4, 5403860), (5, 4323088), (7, 3087920), (8, 2701930), (10, 2161544), (11, 1965040), (14, 1543960), (16, 1350965), (20, 1080772), (22, 982520), (28, 771980), (29, 745360), (35, 617584), (40, 540386), (44, 491260), (55, 393008), (56, 385990), (58, 372680), (70, 308792), (77, 280720), (80, 270193), (88, 245630), (110, 196504), (112, 192995), (116, 186340), (121, 178640), (140, 154396), (145, 149072), (154, 140360), (176, 122815), (203, 106480), (220, 98252), (232, 93170), (242, 89320), (280, 77198), (290, 74536), (308, 70180), (319, 67760), (385, 56144), (406, 53240), (440, 49126), (464, 46585), (484, 44660), (560, 38599), (580, 37268), (605, 35728), (616, 35090), (638, 33880), (770, 28072), (812, 26620), (847, 25520), (880, 24563), (968, 22330), (1015, 21296), (1160, 18634), (1210, 17864), (1232, 17545), (1276, 16940), (1331, 16240), (1540, 14036), (1595, 13552), (1624, 13310), (1694, 12760), (1936, 11165), (2030, 10648), (2233, 9680), (2320, 9317), (2420, 8932), (2552, 8470), (2662, 8120), (3080, 7018), (3190, 6776), (3248, 6655), (3388, 6380), (3509, 6160), (4060, 5324), (4235, 5104), (4466, 4840)]