18121928

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 37928940

約数和(自身を除く): 19807012

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 97, 121, 193, 194, 242, 386, 388, 484, 772, 776, 968, 1067, 1544, 2123, 2134, 4246, 4268, 8492, 8536, 11737, 16984, 18721, 23353, 23474, 37442, 46706, 46948, 74884, 93412, 93896, 149768, 186824, 205931, 411862, 823724, 1647448, 2265241, 4530482, 9060964, 18121928]

約数ペア:

[(1, 18121928), (2, 9060964), (4, 4530482), (8, 2265241), (11, 1647448), (22, 823724), (44, 411862), (88, 205931), (97, 186824), (121, 149768), (193, 93896), (194, 93412), (242, 74884), (386, 46948), (388, 46706), (484, 37442), (772, 23474), (776, 23353), (968, 18721), (1067, 16984), (1544, 11737), (2123, 8536), (2134, 8492), (4246, 4268)]