18136489

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{887}}^1$

素因数の和:1044

約数の個数: 16

約数和(自身を含む): 21823488

約数和(自身を除く): 3686999

約数列:

[1, 7, 23, 127, 161, 887, 889, 2921, 6209, 20401, 20447, 112649, 142807, 788543, 2590927, 18136489]

約数ペア:

[(1, 18136489), (7, 2590927), (23, 788543), (127, 142807), (161, 112649), (887, 20447), (889, 20401), (2921, 6209)]