20491191

素因数分解:

$3^3\times 7^1\times {\mathrm{181}}^1\times {\mathrm{599}}^1$

素因数の和:796

約数の個数: 32

約数和(自身を含む): 34944000

約数和(自身を除く): 14452809

約数列:

[1, 3, 7, 9, 21, 27, 63, 181, 189, 543, 599, 1267, 1629, 1797, 3801, 4193, 4887, 5391, 11403, 12579, 16173, 34209, 37737, 108419, 113211, 325257, 758933, 975771, 2276799, 2927313, 6830397, 20491191]

約数ペア:

[(1, 20491191), (3, 6830397), (7, 2927313), (9, 2276799), (21, 975771), (27, 758933), (63, 325257), (181, 113211), (189, 108419), (543, 37737), (599, 34209), (1267, 16173), (1629, 12579), (1797, 11403), (3801, 5391), (4193, 4887)]