78828988

素因数分解:

$2^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{21491}}^1$

素因数の和:21633

約数の個数: 24

約数和(自身を含む): 158868864

約数和(自身を除く): 80039876

約数列:

[1, 2, 4, 7, 14, 28, 131, 262, 524, 917, 1834, 3668, 21491, 42982, 85964, 150437, 300874, 601748, 2815321, 5630642, 11261284, 19707247, 39414494, 78828988]

約数ペア:

[(1, 78828988), (2, 39414494), (4, 19707247), (7, 11261284), (14, 5630642), (28, 2815321), (131, 601748), (262, 300874), (524, 150437), (917, 85964), (1834, 42982), (3668, 21491)]