21058499

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{557}}^1$

素因数の和:1066

約数の個数: 16

約数和(自身を含む): 26355456

約数和(自身を除く): 5296957

約数列:

[1, 7, 11, 77, 491, 557, 3437, 3899, 5401, 6127, 37807, 42889, 273487, 1914409, 3008357, 21058499]

約数ペア:

[(1, 21058499), (7, 3008357), (11, 1914409), (77, 273487), (491, 42889), (557, 37807), (3437, 6127), (3899, 5401)]