21375809

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1459}}^1$

素因数の和:1509

約数の個数: 24

約数和(自身を含む): 27961920

約数和(自身を除く): 6586111

約数列:

[1, 7, 13, 23, 49, 91, 161, 299, 637, 1127, 1459, 2093, 10213, 14651, 18967, 33557, 71491, 132769, 234899, 436241, 929383, 1644293, 3053687, 21375809]

約数ペア:

[(1, 21375809), (7, 3053687), (13, 1644293), (23, 929383), (49, 436241), (91, 234899), (161, 132769), (299, 71491), (637, 33557), (1127, 18967), (1459, 14651), (2093, 10213)]