21418383

素因数分解:

$3^1\times 7^1\times {\mathrm{661}}^1\times {\mathrm{1543}}^1$

素因数の和:2214

約数の個数: 16

約数和(自身を含む): 32708096

約数和(自身を除く): 11289713

約数列:

[1, 3, 7, 21, 661, 1543, 1983, 4627, 4629, 10801, 13881, 32403, 1019923, 3059769, 7139461, 21418383]

約数ペア:

[(1, 21418383), (3, 7139461), (7, 3059769), (21, 1019923), (661, 32403), (1543, 13881), (1983, 10801), (4627, 4629)]