21808970

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{41149}}^1$

素因数の和:41209

約数の個数: 16

約数和(自身を含む): 39997800

約数和(自身を除く): 18188830

約数列:

[1, 2, 5, 10, 53, 106, 265, 530, 41149, 82298, 205745, 411490, 2180897, 4361794, 10904485, 21808970]

約数ペア:

[(1, 21808970), (2, 10904485), (5, 4361794), (10, 2180897), (53, 411490), (106, 205745), (265, 82298), (530, 41149)]