1998777

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1637}}^1$

素因数の和:1688

約数の個数: 16

約数和(自身を含む): 2987712

約数和(自身を除く): 988935

約数列:

[1, 3, 11, 33, 37, 111, 407, 1221, 1637, 4911, 18007, 54021, 60569, 181707, 666259, 1998777]

約数ペア:

[(1, 1998777), (3, 666259), (11, 181707), (33, 60569), (37, 54021), (111, 18007), (407, 4911), (1221, 1637)]