20991635

素因数分解:

$5^1\times 7^1\times {\mathrm{461}}^1\times {\mathrm{1301}}^1$

素因数の和:1774

約数の個数: 16

約数和(自身を含む): 28873152

約数和(自身を除く): 7881517

約数列:

[1, 5, 7, 35, 461, 1301, 2305, 3227, 6505, 9107, 16135, 45535, 599761, 2998805, 4198327, 20991635]

約数ペア:

[(1, 20991635), (5, 4198327), (7, 2998805), (35, 599761), (461, 45535), (1301, 16135), (2305, 9107), (3227, 6505)]