81986120

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{16139}}^1$

素因数の和:16277

約数の個数: 32

約数和(自身を含む): 185932800

約数和(自身を除く): 103946680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 16139, 32278, 64556, 80695, 129112, 161390, 322780, 645560, 2049653, 4099306, 8198612, 10248265, 16397224, 20496530, 40993060, 81986120]

約数ペア:

[(1, 81986120), (2, 40993060), (4, 20496530), (5, 16397224), (8, 10248265), (10, 8198612), (20, 4099306), (40, 2049653), (127, 645560), (254, 322780), (508, 161390), (635, 129112), (1016, 80695), (1270, 64556), (2540, 32278), (5080, 16139)]