2781255

素因数分解:

$3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1181}}^1$

素因数の和:1346

約数の個数: 16

約数和(自身を含む): 4482144

約数和(自身を除く): 1700889

約数列:

[1, 3, 5, 15, 157, 471, 785, 1181, 2355, 3543, 5905, 17715, 185417, 556251, 927085, 2781255]

約数ペア:

[(1, 2781255), (3, 927085), (5, 556251), (15, 185417), (157, 17715), (471, 5905), (785, 3543), (1181, 2355)]