21209792

素因数分解:

$2^6\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:249

約数の個数: 56

約数和(自身を含む): 44165520

約数和(自身を除く): 22955728

約数列:

[1, 2, 4, 8, 16, 32, 41, 59, 64, 82, 118, 137, 164, 236, 274, 328, 472, 548, 656, 944, 1096, 1312, 1888, 2192, 2419, 2624, 3776, 4384, 4838, 5617, 8083, 8768, 9676, 11234, 16166, 19352, 22468, 32332, 38704, 44936, 64664, 77408, 89872, 129328, 154816, 179744, 258656, 331403, 359488, 517312, 662806, 1325612, 2651224, 5302448, 10604896, 21209792]

約数ペア:

[(1, 21209792), (2, 10604896), (4, 5302448), (8, 2651224), (16, 1325612), (32, 662806), (41, 517312), (59, 359488), (64, 331403), (82, 258656), (118, 179744), (137, 154816), (164, 129328), (236, 89872), (274, 77408), (328, 64664), (472, 44936), (548, 38704), (656, 32332), (944, 22468), (1096, 19352), (1312, 16166), (1888, 11234), (2192, 9676), (2419, 8768), (2624, 8083), (3776, 5617), (4384, 4838)]