21940278

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{51503}}^1$

素因数の和:51579

約数の個数: 16

約数和(自身を含む): 44499456

約数和(自身を除く): 22559178

約数列:

[1, 2, 3, 6, 71, 142, 213, 426, 51503, 103006, 154509, 309018, 3656713, 7313426, 10970139, 21940278]

約数ペア:

[(1, 21940278), (2, 10970139), (3, 7313426), (6, 3656713), (71, 309018), (142, 154509), (213, 103006), (426, 51503)]