16181581

素因数分解:

${\mathrm{13}}^2\times {\mathrm{23}}^2\times {\mathrm{181}}^1$

素因数の和:253

約数の個数: 18

約数和(自身を含む): 18418218

約数和(自身を除く): 2236637

約数列:

[1, 13, 23, 169, 181, 299, 529, 2353, 3887, 4163, 6877, 30589, 54119, 89401, 95749, 703547, 1244737, 16181581]

約数ペア:

[(1, 16181581), (13, 1244737), (23, 703547), (169, 95749), (181, 89401), (299, 54119), (529, 30589), (2353, 6877), (3887, 4163)]