18781025

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{2081}}^1$

素因数の和:2129

約数の個数: 18

約数和(自身を含む): 24590502

約数和(自身を除く): 5809477

約数列:

[1, 5, 19, 25, 95, 361, 475, 1805, 2081, 9025, 10405, 39539, 52025, 197695, 751241, 988475, 3756205, 18781025]

約数ペア:

[(1, 18781025), (5, 3756205), (19, 988475), (25, 751241), (95, 197695), (361, 52025), (475, 39539), (1805, 10405), (2081, 9025)]