2778741

素因数分解:

$3^2\times 7^2\times {\mathrm{6301}}^1$

素因数の和:6321

約数の個数: 18

約数和(自身を含む): 4669782

約数和(自身を除く): 1891041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 6301, 18903, 44107, 56709, 132321, 308749, 396963, 926247, 2778741]

約数ペア:

[(1, 2778741), (3, 926247), (7, 396963), (9, 308749), (21, 132321), (49, 56709), (63, 44107), (147, 18903), (441, 6301)]