68978889

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{7877}}^1$

素因数の和:8029

約数の個数: 24

約数和(自身を含む): 114703680

約数和(自身を除く): 45724791

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2919, 7877, 8757, 23631, 55139, 70893, 165417, 496251, 1094903, 3284709, 7664321, 9854127, 22992963, 68978889]

約数ペア:

[(1, 68978889), (3, 22992963), (7, 9854127), (9, 7664321), (21, 3284709), (63, 1094903), (139, 496251), (417, 165417), (973, 70893), (1251, 55139), (2919, 23631), (7877, 8757)]