81667768

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{112181}}^1$

素因数の和:112207

約数の個数: 32

約数和(自身を含む): 188465760

約数和(自身を除く): 106797992

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 112181, 224362, 448724, 785267, 897448, 1458353, 1570534, 2916706, 3141068, 5833412, 6282136, 10208471, 11666824, 20416942, 40833884, 81667768]

約数ペア:

[(1, 81667768), (2, 40833884), (4, 20416942), (7, 11666824), (8, 10208471), (13, 6282136), (14, 5833412), (26, 3141068), (28, 2916706), (52, 1570534), (56, 1458353), (91, 897448), (104, 785267), (182, 448724), (364, 224362), (728, 112181)]