21581728

素因数分解:

$2^5\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:170

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 30672992

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 59, 71, 92, 112, 118, 142, 161, 184, 224, 236, 284, 322, 368, 413, 472, 497, 568, 644, 736, 826, 944, 994, 1136, 1288, 1357, 1633, 1652, 1888, 1988, 2272, 2576, 2714, 3266, 3304, 3976, 4189, 5152, 5428, 6532, 6608, 7952, 8378, 9499, 10856, 11431, 13064, 13216, 15904, 16756, 18998, 21712, 22862, 26128, 29323, 33512, 37996, 43424, 45724, 52256, 58646, 67024, 75992, 91448, 96347, 117292, 134048, 151984, 182896, 192694, 234584, 303968, 365792, 385388, 469168, 674429, 770776, 938336, 1348858, 1541552, 2697716, 3083104, 5395432, 10790864, 21581728]

約数ペア:

[(1, 21581728), (2, 10790864), (4, 5395432), (7, 3083104), (8, 2697716), (14, 1541552), (16, 1348858), (23, 938336), (28, 770776), (32, 674429), (46, 469168), (56, 385388), (59, 365792), (71, 303968), (92, 234584), (112, 192694), (118, 182896), (142, 151984), (161, 134048), (184, 117292), (224, 96347), (236, 91448), (284, 75992), (322, 67024), (368, 58646), (413, 52256), (472, 45724), (497, 43424), (568, 37996), (644, 33512), (736, 29323), (826, 26128), (944, 22862), (994, 21712), (1136, 18998), (1288, 16756), (1357, 15904), (1633, 13216), (1652, 13064), (1888, 11431), (1988, 10856), (2272, 9499), (2576, 8378), (2714, 7952), (3266, 6608), (3304, 6532), (3976, 5428), (4189, 5152)]