208487517

素因数分解:

$3^1\times 7^1\times {\mathrm{571}}^1\times {\mathrm{17387}}^1$

素因数の和:17968

約数の個数: 16

約数和(自身を含む): 318269952

約数和(自身を除く): 109782435

約数列:

[1, 3, 7, 21, 571, 1713, 3997, 11991, 17387, 52161, 121709, 365127, 9927977, 29783931, 69495839, 208487517]

約数ペア:

[(1, 208487517), (3, 69495839), (7, 29783931), (21, 9927977), (571, 365127), (1713, 121709), (3997, 52161), (11991, 17387)]