21240012

素因数分解:

$2^2\times 3^1\times {\mathrm{1770001}}^1$

素因数の和:1770008

約数の個数: 12

約数和(自身を含む): 49560056

約数和(自身を除く): 28320044

約数列:

[1, 2, 3, 4, 6, 12, 1770001, 3540002, 5310003, 7080004, 10620006, 21240012]

約数ペア:

[(1, 21240012), (2, 10620006), (3, 7080004), (4, 5310003), (6, 3540002), (12, 1770001)]