21360012

素因数分解:

$2^2\times 3^1\times {\mathrm{1780001}}^1$

素因数の和:1780008

約数の個数: 12

約数和(自身を含む): 49840056

約数和(自身を除く): 28480044

約数列:

[1, 2, 3, 4, 6, 12, 1780001, 3560002, 5340003, 7120004, 10680006, 21360012]

約数ペア:

[(1, 21360012), (2, 10680006), (3, 7120004), (4, 5340003), (6, 3560002), (12, 1780001)]