21145971

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{91541}}^1$

素因数の和:91562

約数の個数: 16

約数和(自身を含む): 35152128

約数和(自身を除く): 14006157

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 91541, 274623, 640787, 1006951, 1922361, 3020853, 7048657, 21145971]

約数ペア:

[(1, 21145971), (3, 7048657), (7, 3020853), (11, 1922361), (21, 1006951), (33, 640787), (77, 274623), (231, 91541)]