81139984

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{691}}^1$

素因数の和:919

約数の個数: 40

約数和(自身を含む): 162177120

約数和(自身を除く): 81037136

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 179, 328, 358, 656, 691, 716, 1382, 1432, 2764, 2864, 5528, 7339, 11056, 14678, 28331, 29356, 56662, 58712, 113324, 117424, 123689, 226648, 247378, 453296, 494756, 989512, 1979024, 5071249, 10142498, 20284996, 40569992, 81139984]

約数ペア:

[(1, 81139984), (2, 40569992), (4, 20284996), (8, 10142498), (16, 5071249), (41, 1979024), (82, 989512), (164, 494756), (179, 453296), (328, 247378), (358, 226648), (656, 123689), (691, 117424), (716, 113324), (1382, 58712), (1432, 56662), (2764, 29356), (2864, 28331), (5528, 14678), (7339, 11056)]