19892719

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{3539}}^1$

素因数の和:3630

約数の個数: 16

約数和(自身を含む): 25148160

約数和(自身を除く): 5255441

約数列:

[1, 7, 11, 73, 77, 511, 803, 3539, 5621, 24773, 38929, 258347, 272503, 1808429, 2841817, 19892719]

約数ペア:

[(1, 19892719), (7, 2841817), (11, 1808429), (73, 272503), (77, 258347), (511, 38929), (803, 24773), (3539, 5621)]