128565740

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{66271}}^1$

素因数の和:66377

約数の個数: 24

約数和(自身を含む): 272775552

約数和(自身を除く): 144209812

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 66271, 132542, 265084, 331355, 662710, 1325420, 6428287, 12856574, 25713148, 32141435, 64282870, 128565740]

約数ペア:

[(1, 128565740), (2, 64282870), (4, 32141435), (5, 25713148), (10, 12856574), (20, 6428287), (97, 1325420), (194, 662710), (388, 331355), (485, 265084), (970, 132542), (1940, 66271)]