21000547666

素因数分解:

$2^1\times 7^1\times {\mathrm{20389}}^1\times {\mathrm{73571}}^1$

素因数の和:93969

約数の個数: 16

約数和(自身を含む): 36003193920

約数和(自身を除く): 15002646254

約数列:

[1, 2, 7, 14, 20389, 40778, 73571, 142723, 147142, 285446, 514997, 1029994, 1500039119, 3000078238, 10500273833, 21000547666]

約数ペア:

[(1, 21000547666), (2, 10500273833), (7, 3000078238), (14, 1500039119), (20389, 1029994), (40778, 514997), (73571, 285446), (142723, 147142)]