20999954

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{3607}}^1$

素因数の和:3721

約数の個数: 16

約数和(自身を含む): 32731776

約数和(自身を除く): 11731822

約数列:

[1, 2, 41, 71, 82, 142, 2911, 3607, 5822, 7214, 147887, 256097, 295774, 512194, 10499977, 20999954]

約数ペア:

[(1, 20999954), (2, 10499977), (41, 512194), (71, 295774), (82, 256097), (142, 147887), (2911, 7214), (3607, 5822)]