21292141

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^2\times {\mathrm{349}}^1$

素因数の和:413

約数の個数: 18

約数和(自身を含む): 24403050

約数和(自身を除く): 3110909

約数列:

[1, 13, 19, 169, 247, 349, 361, 3211, 4537, 4693, 6631, 58981, 61009, 86203, 125989, 1120639, 1637857, 21292141]

約数ペア:

[(1, 21292141), (13, 1637857), (19, 1120639), (169, 125989), (247, 86203), (349, 61009), (361, 58981), (3211, 6631), (4537, 4693)]