28920647

素因数分解:

$7^1\times {\mathrm{97}}^1\times {\mathrm{191}}^1\times {\mathrm{223}}^1$

素因数の和:518

約数の個数: 16

約数和(自身を含む): 33718272

約数和(自身を除く): 4797625

約数列:

[1, 7, 97, 191, 223, 679, 1337, 1561, 18527, 21631, 42593, 129689, 151417, 298151, 4131521, 28920647]

約数ペア:

[(1, 28920647), (7, 4131521), (97, 298151), (191, 151417), (223, 129689), (679, 42593), (1337, 21631), (1561, 18527)]