21931042

素因数分解:

$2^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{4027}}^1$

素因数の和:4425

約数の個数: 16

約数和(自身を含む): 37702080

約数和(自身を除く): 15771038

約数列:

[1, 2, 7, 14, 389, 778, 2723, 4027, 5446, 8054, 28189, 56378, 1566503, 3133006, 10965521, 21931042]

約数ペア:

[(1, 21931042), (2, 10965521), (7, 3133006), (14, 1566503), (389, 56378), (778, 28189), (2723, 8054), (4027, 5446)]