1687977

素因数分解:

$3^2\times {\mathrm{37}}^2\times {\mathrm{137}}^1$

素因数の和:217

約数の個数: 18

約数和(自身を含む): 2524158

約数和(自身を除く): 836181

約数列:

[1, 3, 9, 37, 111, 137, 333, 411, 1233, 1369, 4107, 5069, 12321, 15207, 45621, 187553, 562659, 1687977]

約数ペア:

[(1, 1687977), (3, 562659), (9, 187553), (37, 45621), (111, 15207), (137, 12321), (333, 5069), (411, 4107), (1233, 1369)]