203956479

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{42839}}^1$

素因数の和:42891

約数の個数: 18

約数和(自身を含む): 307976760

約数和(自身を除く): 104020281

約数列:

[1, 3, 9, 23, 69, 207, 529, 1587, 4761, 42839, 128517, 385551, 985297, 2955891, 8867673, 22661831, 67985493, 203956479]

約数ペア:

[(1, 203956479), (3, 67985493), (9, 22661831), (23, 8867673), (69, 2955891), (207, 985297), (529, 385551), (1587, 128517), (4761, 42839)]