205109247

素因数分解:

$3^1\times 7^2\times {\mathrm{1395301}}^1$

素因数の和:1395318

約数の個数: 12

約数和(自身を含む): 318128856

約数和(自身を除く): 113019609

約数列:

[1, 3, 7, 21, 49, 147, 1395301, 4185903, 9767107, 29301321, 68369749, 205109247]

約数ペア:

[(1, 205109247), (3, 68369749), (7, 29301321), (21, 9767107), (49, 4185903), (147, 1395301)]