18939865

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1499}}^1$

素因数の和:1549

約数の個数: 24

約数和(自身を含む): 27432000

約数和(自身を除く): 8492135

約数列:

[1, 5, 7, 19, 35, 95, 133, 361, 665, 1499, 1805, 2527, 7495, 10493, 12635, 28481, 52465, 142405, 199367, 541139, 996835, 2705695, 3787973, 18939865]

約数ペア:

[(1, 18939865), (5, 3787973), (7, 2705695), (19, 996835), (35, 541139), (95, 199367), (133, 142405), (361, 52465), (665, 28481), (1499, 12635), (1805, 10493), (2527, 7495)]