81978694

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{188891}}^1$

素因数の和:188931

約数の個数: 16

約数和(自身を含む): 145069056

約数和(自身を除く): 63090362

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 188891, 377782, 1322237, 2644474, 5855621, 11711242, 40989347, 81978694]

約数ペア:

[(1, 81978694), (2, 40989347), (7, 11711242), (14, 5855621), (31, 2644474), (62, 1322237), (217, 377782), (434, 188891)]