12728457

素因数分解:

$3^2\times 7^1\times {\mathrm{281}}^1\times {\mathrm{719}}^1$

素因数の和:1013

約数の個数: 24

約数和(自身を含む): 21116160

約数和(自身を除く): 8387703

約数列:

[1, 3, 7, 9, 21, 63, 281, 719, 843, 1967, 2157, 2529, 5033, 5901, 6471, 15099, 17703, 45297, 202039, 606117, 1414273, 1818351, 4242819, 12728457]

約数ペア:

[(1, 12728457), (3, 4242819), (7, 1818351), (9, 1414273), (21, 606117), (63, 202039), (281, 45297), (719, 17703), (843, 15099), (1967, 6471), (2157, 5901), (2529, 5033)]