15491987

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:219

約数の個数: 24

約数和(自身を含む): 18829152

約数和(自身を除く): 3337165

約数列:

[1, 7, 49, 61, 71, 73, 427, 497, 511, 2989, 3479, 3577, 4331, 4453, 5183, 30317, 31171, 36281, 212219, 218197, 253967, 316163, 2213141, 15491987]

約数ペア:

[(1, 15491987), (7, 2213141), (49, 316163), (61, 253967), (71, 218197), (73, 212219), (427, 36281), (497, 31171), (511, 30317), (2989, 5183), (3479, 4453), (3577, 4331)]