21809359

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{349}}^1$

素因数の和:415

約数の個数: 32

約数和(自身を含む): 28224000

約数和(自身を除く): 6414641

約数列:

[1, 11, 13, 19, 23, 143, 209, 247, 253, 299, 349, 437, 2717, 3289, 3839, 4537, 4807, 5681, 6631, 8027, 49907, 62491, 72941, 86203, 88297, 104351, 152513, 948233, 1147861, 1677643, 1982669, 21809359]

約数ペア:

[(1, 21809359), (11, 1982669), (13, 1677643), (19, 1147861), (23, 948233), (143, 152513), (209, 104351), (247, 88297), (253, 86203), (299, 72941), (349, 62491), (437, 49907), (2717, 8027), (3289, 6631), (3839, 5681), (4537, 4807)]