21185589

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{443}}^1\times {\mathrm{839}}^1$

素因数の和:1304

約数の個数: 16

約数和(自身を含む): 29836800

約数和(自身を除く): 8651211

約数列:

[1, 3, 19, 57, 443, 839, 1329, 2517, 8417, 15941, 25251, 47823, 371677, 1115031, 7061863, 21185589]

約数ペア:

[(1, 21185589), (3, 7061863), (19, 1115031), (57, 371677), (443, 47823), (839, 25251), (1329, 15941), (2517, 8417)]