20487902

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{647}}^1$

素因数の和:943

約数の個数: 16

約数和(自身を含む): 31352832

約数和(自身を除く): 10864930

約数列:

[1, 2, 71, 142, 223, 446, 647, 1294, 15833, 31666, 45937, 91874, 144281, 288562, 10243951, 20487902]

約数ペア:

[(1, 20487902), (2, 10243951), (71, 288562), (142, 144281), (223, 91874), (446, 45937), (647, 31666), (1294, 15833)]