21056475

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25523}}^1$

素因数の和:25547

約数の個数: 24

約数和(自身を含む): 37979712

約数和(自身を除く): 16923237

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25523, 76569, 127615, 280753, 382845, 638075, 842259, 1403765, 1914225, 4211295, 7018825, 21056475]

約数ペア:

[(1, 21056475), (3, 7018825), (5, 4211295), (11, 1914225), (15, 1403765), (25, 842259), (33, 638075), (55, 382845), (75, 280753), (165, 127615), (275, 76569), (825, 25523)]