21356115

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{347}}^1\times {\mathrm{373}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 37483776

約数和(自身を除く): 16127661

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 347, 373, 1041, 1119, 1735, 1865, 3817, 4103, 5205, 5595, 11451, 12309, 19085, 20515, 57255, 61545, 129431, 388293, 647155, 1423741, 1941465, 4271223, 7118705, 21356115]

約数ペア:

[(1, 21356115), (3, 7118705), (5, 4271223), (11, 1941465), (15, 1423741), (33, 647155), (55, 388293), (165, 129431), (347, 61545), (373, 57255), (1041, 20515), (1119, 19085), (1735, 12309), (1865, 11451), (3817, 5595), (4103, 5205)]