21150309

素因数分解:

$3^1\times {\mathrm{29}}^2\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 29850912

約数和(自身を除く): 8700603

約数列:

[1, 3, 29, 83, 87, 101, 249, 303, 841, 2407, 2523, 2929, 7221, 8383, 8787, 25149, 69803, 84941, 209409, 243107, 254823, 729321, 7050103, 21150309]

約数ペア:

[(1, 21150309), (3, 7050103), (29, 729321), (83, 254823), (87, 243107), (101, 209409), (249, 84941), (303, 69803), (841, 25149), (2407, 8787), (2523, 8383), (2929, 7221)]