21303997

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7841}}^1$

素因数の和:7884

約数の個数: 16

約数和(自身を含む): 26349120

約数和(自身を除く): 5045123

約数列:

[1, 11, 13, 19, 143, 209, 247, 2717, 7841, 86251, 101933, 148979, 1121263, 1638769, 1936727, 21303997]

約数ペア:

[(1, 21303997), (11, 1936727), (13, 1638769), (19, 1121263), (143, 148979), (209, 101933), (247, 86251), (2717, 7841)]