19980298

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1\times {\mathrm{1783}}^1$

素因数の和:2229

約数の個数: 16

約数和(自身を含む): 32368896

約数和(自身を除く): 12388598

約数列:

[1, 2, 13, 26, 431, 862, 1783, 3566, 5603, 11206, 23179, 46358, 768473, 1536946, 9990149, 19980298]

約数ペア:

[(1, 19980298), (2, 9990149), (13, 1536946), (26, 768473), (431, 46358), (862, 23179), (1783, 11206), (3566, 5603)]