21018545

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{2311}}^1$

素因数の和:2440

約数の個数: 16

約数和(自身を含む): 26967168

約数和(自身を除く): 5948623

約数列:

[1, 5, 17, 85, 107, 535, 1819, 2311, 9095, 11555, 39287, 196435, 247277, 1236385, 4203709, 21018545]

約数ペア:

[(1, 21018545), (5, 4203709), (17, 1236385), (85, 247277), (107, 196435), (535, 39287), (1819, 11555), (2311, 9095)]