21319754

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{8387}}^1$

素因数の和:8461

約数の個数: 16

約数和(自身を含む): 33820416

約数和(自身を除く): 12500662

約数列:

[1, 2, 31, 41, 62, 82, 1271, 2542, 8387, 16774, 259997, 343867, 519994, 687734, 10659877, 21319754]

約数ペア:

[(1, 21319754), (2, 10659877), (31, 687734), (41, 519994), (62, 343867), (82, 259997), (1271, 16774), (2542, 8387)]