21085883

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1667}}^1$

素因数の和:1826

約数の個数: 16

約数和(自身を含む): 26154240

約数和(自身を除く): 5068357

約数列:

[1, 7, 13, 91, 139, 973, 1667, 1807, 11669, 12649, 21671, 151697, 231713, 1621991, 3012269, 21085883]

約数ペア:

[(1, 21085883), (7, 3012269), (13, 1621991), (91, 231713), (139, 151697), (973, 21671), (1667, 12649), (1807, 11669)]