87490431

素因数分解:

$3^2\times 7^2\times {\mathrm{198391}}^1$

素因数の和:198411

約数の個数: 18

約数和(自身を含む): 147008472

約数和(自身を除く): 59518041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 198391, 595173, 1388737, 1785519, 4166211, 9721159, 12498633, 29163477, 87490431]

約数ペア:

[(1, 87490431), (3, 29163477), (7, 12498633), (9, 9721159), (21, 4166211), (49, 1785519), (63, 1388737), (147, 595173), (441, 198391)]