21990354

素因数分解:

$2^1\times 3^1\times {\mathrm{787}}^1\times {\mathrm{4657}}^1$

素因数の和:5449

約数の個数: 16

約数和(自身を含む): 44046048

約数和(自身を除く): 22055694

約数列:

[1, 2, 3, 6, 787, 1574, 2361, 4657, 4722, 9314, 13971, 27942, 3665059, 7330118, 10995177, 21990354]

約数ペア:

[(1, 21990354), (2, 10995177), (3, 7330118), (6, 3665059), (787, 27942), (1574, 13971), (2361, 9314), (4657, 4722)]