21003369982

素因数分解:

$2^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{11812919}}^1$

素因数の和:11813055

約数の個数: 16

約数和(自身を含む): 36289290240

約数和(自身を除く): 15285920258

約数列:

[1, 2, 7, 14, 127, 254, 889, 1778, 11812919, 23625838, 82690433, 165380866, 1500240713, 3000481426, 10501684991, 21003369982]

約数ペア:

[(1, 21003369982), (2, 10501684991), (7, 3000481426), (14, 1500240713), (127, 165380866), (254, 82690433), (889, 23625838), (1778, 11812919)]