21683389

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12541}}^1$

素因数の和:12580

約数の個数: 16

約数和(自身を含む): 28094080

約数和(自身を除く): 6410691

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 12541, 87787, 163033, 238279, 1141231, 1667953, 3097627, 21683389]

約数ペア:

[(1, 21683389), (7, 3097627), (13, 1667953), (19, 1141231), (91, 238279), (133, 163033), (247, 87787), (1729, 12541)]