21665149

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4507}}^1$

素因数の和:4560

約数の個数: 16

約数和(自身を含む): 25966080

約数和(自身を除く): 4300931

約数列:

[1, 11, 19, 23, 209, 253, 437, 4507, 4807, 49577, 85633, 103661, 941963, 1140271, 1969559, 21665149]

約数ペア:

[(1, 21665149), (11, 1969559), (19, 1140271), (23, 941963), (209, 103661), (253, 85633), (437, 49577), (4507, 4807)]