21011888

素因数分解:

$2^4\times {\mathrm{173}}^1\times {\mathrm{7591}}^1$

素因数の和:7772

約数の個数: 20

約数和(自身を含む): 40951248

約数和(自身を除く): 19939360

約数列:

[1, 2, 4, 8, 16, 173, 346, 692, 1384, 2768, 7591, 15182, 30364, 60728, 121456, 1313243, 2626486, 5252972, 10505944, 21011888]

約数ペア:

[(1, 21011888), (2, 10505944), (4, 5252972), (8, 2626486), (16, 1313243), (173, 121456), (346, 60728), (692, 30364), (1384, 15182), (2768, 7591)]