19503025

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{2161}}^1$

素因数の和:2209

約数の個数: 18

約数和(自身を含む): 25535382

約数和(自身を除く): 6032357

約数列:

[1, 5, 19, 25, 95, 361, 475, 1805, 2161, 9025, 10805, 41059, 54025, 205295, 780121, 1026475, 3900605, 19503025]

約数ペア:

[(1, 19503025), (5, 3900605), (19, 1026475), (25, 780121), (95, 205295), (361, 54025), (475, 41059), (1805, 10805), (2161, 9025)]