20997418

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{6359}}^1$

素因数の和:6501

約数の個数: 16

約数和(自身を含む): 34191360

約数和(自身を除く): 13193942

約数列:

[1, 2, 13, 26, 127, 254, 1651, 3302, 6359, 12718, 82667, 165334, 807593, 1615186, 10498709, 20997418]

約数ペア:

[(1, 20997418), (2, 10498709), (13, 1615186), (26, 807593), (127, 165334), (254, 82667), (1651, 12718), (3302, 6359)]