18788470

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{81689}}^1$

素因数の和:81719

約数の個数: 16

約数和(自身を含む): 35290080

約数和(自身を除く): 16501610

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 81689, 163378, 408445, 816890, 1878847, 3757694, 9394235, 18788470]

約数ペア:

[(1, 18788470), (2, 9394235), (5, 3757694), (10, 1878847), (23, 816890), (46, 408445), (115, 163378), (230, 81689)]