56343640

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2131}}^1$

素因数の和:2803

約数の個数: 32

約数和(自身を含む): 127024560

約数和(自身を除く): 70680920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2131, 2644, 3305, 4262, 5288, 6610, 8524, 10655, 13220, 17048, 21310, 26440, 42620, 85240, 1408591, 2817182, 5634364, 7042955, 11268728, 14085910, 28171820, 56343640]

約数ペア:

[(1, 56343640), (2, 28171820), (4, 14085910), (5, 11268728), (8, 7042955), (10, 5634364), (20, 2817182), (40, 1408591), (661, 85240), (1322, 42620), (2131, 26440), (2644, 21310), (3305, 17048), (4262, 13220), (5288, 10655), (6610, 8524)]