21951631.000000000

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:449

約数の個数: 80

約数和(自身を含む): 348540192

約数和(自身を除く): 191007520

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 83, 88, 128, 166, 176, 256, 332, 337, 352, 512, 664, 674, 704, 913, 1328, 1348, 1408, 1826, 2656, 2696, 2816, 3652, 3707, 5312, 5392, 5632, 7304, 7414, 10624, 10784, 14608, 14828, 21248, 21568, 27971, 29216, 29656, 42496, 43136, 55942, 58432, 59312, 86272, 111884, 116864, 118624, 172544, 223768, 233728, 237248, 307681, 447536, 467456, 474496, 615362, 895072, 948992, 1230724, 1790144, 1897984, 2461448, 3580288, 4922896, 7160576, 9845792, 14321152, 19691584, 39383168, 78766336, 157532672]

約数ペア:

[(1, 157532672), (2, 78766336), (4, 39383168), (8, 19691584), (11, 14321152), (16, 9845792), (22, 7160576), (32, 4922896), (44, 3580288), (64, 2461448), (83, 1897984), (88, 1790144), (128, 1230724), (166, 948992), (176, 895072), (256, 615362), (332, 474496), (337, 467456), (352, 447536), (512, 307681), (664, 237248), (674, 233728), (704, 223768), (913, 172544), (1328, 118624), (1348, 116864), (1408, 111884), (1826, 86272), (2656, 59312), (2696, 58432), (2816, 55942), (3652, 43136), (3707, 42496), (5312, 29656), (5392, 29216), (5632, 27971), (7304, 21568), (7414, 21248), (10624, 14828), (10784, 14608)]