208664533

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{1997}}^1$

素因数の和:2097

約数の個数: 32

約数和(自身を含む): 276203520

約数和(自身を除く): 67538987

約数列:

[1, 7, 11, 23, 59, 77, 161, 253, 413, 649, 1357, 1771, 1997, 4543, 9499, 13979, 14927, 21967, 45931, 104489, 117823, 153769, 321517, 505241, 824761, 1296053, 2709929, 3536687, 9072371, 18969503, 29809219, 208664533]

約数ペア:

[(1, 208664533), (7, 29809219), (11, 18969503), (23, 9072371), (59, 3536687), (77, 2709929), (161, 1296053), (253, 824761), (413, 505241), (649, 321517), (1357, 153769), (1771, 117823), (1997, 104489), (4543, 45931), (9499, 21967), (13979, 14927)]