21903184

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1$

素因数の和:415

約数の個数: 40

約数和(自身を含む): 43950312

約数和(自身を除く): 22047128

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 173, 193, 328, 346, 386, 656, 692, 772, 1384, 1544, 2768, 3088, 7093, 7913, 14186, 15826, 28372, 31652, 33389, 56744, 63304, 66778, 113488, 126608, 133556, 267112, 534224, 1368949, 2737898, 5475796, 10951592, 21903184]

約数ペア:

[(1, 21903184), (2, 10951592), (4, 5475796), (8, 2737898), (16, 1368949), (41, 534224), (82, 267112), (164, 133556), (173, 126608), (193, 113488), (328, 66778), (346, 63304), (386, 56744), (656, 33389), (692, 31652), (772, 28372), (1384, 15826), (1544, 14186), (2768, 7913), (3088, 7093)]