128881105

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 166560768

約数和(自身を除く): 37679663

約数列:

[1, 5, 31, 43, 61, 155, 215, 305, 317, 1333, 1585, 1891, 2623, 6665, 9455, 9827, 13115, 13631, 19337, 49135, 68155, 81313, 96685, 406565, 422561, 599447, 831491, 2112805, 2997235, 4157455, 25776221, 128881105]

約数ペア:

[(1, 128881105), (5, 25776221), (31, 4157455), (43, 2997235), (61, 2112805), (155, 831491), (215, 599447), (305, 422561), (317, 406565), (1333, 96685), (1585, 81313), (1891, 68155), (2623, 49135), (6665, 19337), (9455, 13631), (9827, 13115)]