81996280

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{16141}}^1$

素因数の和:16279

約数の個数: 32

約数和(自身を含む): 185955840

約数和(自身を除く): 103959560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 16141, 32282, 64564, 80705, 129128, 161410, 322820, 645640, 2049907, 4099814, 8199628, 10249535, 16399256, 20499070, 40998140, 81996280]

約数ペア:

[(1, 81996280), (2, 40998140), (4, 20499070), (5, 16399256), (8, 10249535), (10, 8199628), (20, 4099814), (40, 2049907), (127, 645640), (254, 322820), (508, 161410), (635, 129128), (1016, 80705), (1270, 64564), (2540, 32282), (5080, 16141)]