21057531

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{3821}}^1$

素因数の和:4002

約数の個数: 16

約数和(自身を含む): 30820608

約数和(自身を除く): 9763077

約数列:

[1, 3, 11, 33, 167, 501, 1837, 3821, 5511, 11463, 42031, 126093, 638107, 1914321, 7019177, 21057531]

約数ペア:

[(1, 21057531), (3, 7019177), (11, 1914321), (33, 638107), (167, 126093), (501, 42031), (1837, 11463), (3821, 5511)]