21216018

素因数分解:

$2^1\times 3^1\times {\mathrm{523}}^1\times {\mathrm{6761}}^1$

素因数の和:7289

約数の個数: 16

約数和(自身を含む): 42519456

約数和(自身を除く): 21303438

約数列:

[1, 2, 3, 6, 523, 1046, 1569, 3138, 6761, 13522, 20283, 40566, 3536003, 7072006, 10608009, 21216018]

約数ペア:

[(1, 21216018), (2, 10608009), (3, 7072006), (6, 3536003), (523, 40566), (1046, 20283), (1569, 13522), (3138, 6761)]