21381054

素因数分解:

$2^1\times 3^1\times {\mathrm{509}}^1\times {\mathrm{7001}}^1$

素因数の和:7515

約数の個数: 16

約数和(自身を含む): 42852240

約数和(自身を除く): 21471186

約数列:

[1, 2, 3, 6, 509, 1018, 1527, 3054, 7001, 14002, 21003, 42006, 3563509, 7127018, 10690527, 21381054]

約数ペア:

[(1, 21381054), (2, 10690527), (3, 7127018), (6, 3563509), (509, 42006), (1018, 21003), (1527, 14002), (3054, 7001)]