21193415

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{1051}}^1$

素因数の和:1202

約数の個数: 16

約数和(自身を含む): 26384160

約数和(自身を除く): 5190745

約数列:

[1, 5, 37, 109, 185, 545, 1051, 4033, 5255, 20165, 38887, 114559, 194435, 572795, 4238683, 21193415]

約数ペア:

[(1, 21193415), (5, 4238683), (37, 572795), (109, 194435), (185, 114559), (545, 38887), (1051, 20165), (4033, 5255)]