243580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{641}}^1$

素因数の和:669

約数の個数: 24

約数和(自身を含む): 539280

約数和(自身を除く): 295700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 641, 1282, 2564, 3205, 6410, 12179, 12820, 24358, 48716, 60895, 121790, 243580]

約数ペア:

[(1, 243580), (2, 121790), (4, 60895), (5, 48716), (10, 24358), (19, 12820), (20, 12179), (38, 6410), (76, 3205), (95, 2564), (190, 1282), (380, 641)]