21003794

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{28307}}^1$

素因数の和:28369

約数の個数: 16

約数和(自身を含む): 36687168

約数和(自身を除く): 15683374

約数列:

[1, 2, 7, 14, 53, 106, 371, 742, 28307, 56614, 198149, 396298, 1500271, 3000542, 10501897, 21003794]

約数ペア:

[(1, 21003794), (2, 10501897), (7, 3000542), (14, 1500271), (53, 396298), (106, 198149), (371, 56614), (742, 28307)]