218706057

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{71}}^1\times {\mathrm{647}}^1$

素因数の和:770

約数の個数: 36

約数和(自身を含む): 335409984

約数和(自身を除く): 116703927

約数列:

[1, 3, 9, 23, 69, 71, 207, 213, 529, 639, 647, 1587, 1633, 1941, 4761, 4899, 5823, 14697, 14881, 37559, 44643, 45937, 112677, 133929, 137811, 338031, 342263, 413433, 1026789, 1056551, 3080367, 3169653, 9508959, 24300673, 72902019, 218706057]

約数ペア:

[(1, 218706057), (3, 72902019), (9, 24300673), (23, 9508959), (69, 3169653), (71, 3080367), (207, 1056551), (213, 1026789), (529, 413433), (639, 342263), (647, 338031), (1587, 137811), (1633, 133929), (1941, 112677), (4761, 45937), (4899, 44643), (5823, 37559), (14697, 14881)]