18986638

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:432

約数の個数: 32

約数和(自身を含む): 32762880

約数和(自身を除く): 13776242

約数列:

[1, 2, 11, 22, 23, 46, 157, 239, 253, 314, 478, 506, 1727, 2629, 3454, 3611, 5258, 5497, 7222, 10994, 37523, 39721, 60467, 75046, 79442, 120934, 412753, 825506, 863029, 1726058, 9493319, 18986638]

約数ペア:

[(1, 18986638), (2, 9493319), (11, 1726058), (22, 863029), (23, 825506), (46, 412753), (157, 120934), (239, 79442), (253, 75046), (314, 60467), (478, 39721), (506, 37523), (1727, 10994), (2629, 7222), (3454, 5497), (3611, 5258)]