21339843

素因数分解:

$3^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{811}}^1$

素因数の和:1007

約数の個数: 24

約数和(自身を含む): 33324480

約数和(自身を除く): 11984637

約数列:

[1, 3, 7, 21, 49, 147, 179, 537, 811, 1253, 2433, 3759, 5677, 8771, 17031, 26313, 39739, 119217, 145169, 435507, 1016183, 3048549, 7113281, 21339843]

約数ペア:

[(1, 21339843), (3, 7113281), (7, 3048549), (21, 1016183), (49, 435507), (147, 145169), (179, 119217), (537, 39739), (811, 26313), (1253, 17031), (2433, 8771), (3759, 5677)]