18945745

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{3203}}^1$

素因数の和:3241

約数の個数: 24

約数和(自身を含む): 28143936

約数和(自身を除く): 9198191

約数列:

[1, 5, 7, 13, 35, 65, 91, 169, 455, 845, 1183, 3203, 5915, 16015, 22421, 41639, 112105, 208195, 291473, 541307, 1457365, 2706535, 3789149, 18945745]

約数ペア:

[(1, 18945745), (5, 3789149), (7, 2706535), (13, 1457365), (35, 541307), (65, 291473), (91, 208195), (169, 112105), (455, 41639), (845, 22421), (1183, 16015), (3203, 5915)]