20881581

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{16301}}^1$

素因数の和:16372

約数の個数: 16

約数和(自身を含む): 32343168

約数和(自身を除く): 11461587

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 16301, 48903, 114107, 342321, 994361, 2983083, 6960527, 20881581]

約数ペア:

[(1, 20881581), (3, 6960527), (7, 2983083), (21, 994361), (61, 342321), (183, 114107), (427, 48903), (1281, 16301)]