21311984

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1997}}^1$

素因数の和:2057

約数の個数: 40

約数和(自身を含む): 44595360

約数和(自身を除く): 23283376

約数列:

[1, 2, 4, 8, 16, 23, 29, 46, 58, 92, 116, 184, 232, 368, 464, 667, 1334, 1997, 2668, 3994, 5336, 7988, 10672, 15976, 31952, 45931, 57913, 91862, 115826, 183724, 231652, 367448, 463304, 734896, 926608, 1331999, 2663998, 5327996, 10655992, 21311984]

約数ペア:

[(1, 21311984), (2, 10655992), (4, 5327996), (8, 2663998), (16, 1331999), (23, 926608), (29, 734896), (46, 463304), (58, 367448), (92, 231652), (116, 183724), (184, 115826), (232, 91862), (368, 57913), (464, 45931), (667, 31952), (1334, 15976), (1997, 10672), (2668, 7988), (3994, 5336)]