19812155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{18959}}^1$

素因数の和:18994

約数の個数: 16

約数和(自身を含む): 27302400

約数和(自身を除く): 7490245

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 18959, 94795, 208549, 360221, 1042745, 1801105, 3962431, 19812155]

約数ペア:

[(1, 19812155), (5, 3962431), (11, 1801105), (19, 1042745), (55, 360221), (95, 208549), (209, 94795), (1045, 18959)]