20664891

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{509}}^1$

素因数の和:875

約数の個数: 24

約数和(自身を含む): 32301360

約数和(自身を除く): 11636469

約数列:

[1, 3, 9, 13, 39, 117, 347, 509, 1041, 1527, 3123, 4511, 4581, 6617, 13533, 19851, 40599, 59553, 176623, 529869, 1589607, 2296099, 6888297, 20664891]

約数ペア:

[(1, 20664891), (3, 6888297), (9, 2296099), (13, 1589607), (39, 529869), (117, 176623), (347, 59553), (509, 40599), (1041, 19851), (1527, 13533), (3123, 6617), (4511, 4581)]