20561992

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{139}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 43419600

約数和(自身を除く): 22857608

約数列:

[1, 2, 4, 8, 11, 22, 41, 44, 82, 88, 139, 164, 278, 328, 451, 556, 902, 1112, 1529, 1681, 1804, 3058, 3362, 3608, 5699, 6116, 6724, 11398, 12232, 13448, 18491, 22796, 36982, 45592, 62689, 73964, 125378, 147928, 233659, 250756, 467318, 501512, 934636, 1869272, 2570249, 5140498, 10280996, 20561992]

約数ペア:

[(1, 20561992), (2, 10280996), (4, 5140498), (8, 2570249), (11, 1869272), (22, 934636), (41, 501512), (44, 467318), (82, 250756), (88, 233659), (139, 147928), (164, 125378), (278, 73964), (328, 62689), (451, 45592), (556, 36982), (902, 22796), (1112, 18491), (1529, 13448), (1681, 12232), (1804, 11398), (3058, 6724), (3362, 6116), (3608, 5699)]