21084040901

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{5588137}}^1$

素因数の和:5588169

約数の個数: 16

約数和(自身を含む): 26823062400

約数和(自身を除く): 5739021499

約数列:

[1, 7, 11, 49, 77, 343, 539, 3773, 5588137, 39116959, 61469507, 273818713, 430286549, 1916730991, 3012005843, 21084040901]

約数ペア:

[(1, 21084040901), (7, 3012005843), (11, 1916730991), (49, 430286549), (77, 273818713), (343, 61469507), (539, 39116959), (3773, 5588137)]