20121571337

素因数分解:

$7^2\times {\mathrm{1723}}^1\times {\mathrm{238331}}^1$

素因数の和:240068

約数の個数: 12

約数和(自身を含む): 23420408976

約数和(自身を除く): 3298837639

約数列:

[1, 7, 49, 1723, 12061, 84427, 238331, 1668317, 11678219, 410644313, 2874510191, 20121571337]

約数ペア:

[(1, 20121571337), (7, 2874510191), (49, 410644313), (1723, 11678219), (12061, 1668317), (84427, 238331)]