81577240

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{10567}}^1$

素因数の和:10771

約数の個数: 32

約数和(自身を含む): 184517280

約数和(自身を除く): 102940040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3860, 7720, 10567, 21134, 42268, 52835, 84536, 105670, 211340, 422680, 2039431, 4078862, 8157724, 10197155, 16315448, 20394310, 40788620, 81577240]

約数ペア:

[(1, 81577240), (2, 40788620), (4, 20394310), (5, 16315448), (8, 10197155), (10, 8157724), (20, 4078862), (40, 2039431), (193, 422680), (386, 211340), (772, 105670), (965, 84536), (1544, 52835), (1930, 42268), (3860, 21134), (7720, 10567)]