21148415

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1453}}^1$

素因数の和:1570

約数の個数: 16

約数和(自身を含む): 26381376

約数和(自身を除く): 5232961

約数列:

[1, 5, 41, 71, 205, 355, 1453, 2911, 7265, 14555, 59573, 103163, 297865, 515815, 4229683, 21148415]

約数ペア:

[(1, 21148415), (5, 4229683), (41, 515815), (71, 297865), (205, 103163), (355, 59573), (1453, 14555), (2911, 7265)]