21939005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1669}}^1$

素因数の和:1924

約数の個数: 16

約数和(自身を含む): 28857600

約数和(自身を除く): 6918595

約数列:

[1, 5, 11, 55, 239, 1195, 1669, 2629, 8345, 13145, 18359, 91795, 398891, 1994455, 4387801, 21939005]

約数ペア:

[(1, 21939005), (5, 4387801), (11, 1994455), (55, 398891), (239, 91795), (1195, 18359), (1669, 13145), (2629, 8345)]