21402519

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1\times {\mathrm{661}}^1$

素因数の和:958

約数の個数: 16

約数和(自身を含む): 29361024

約数和(自身を除く): 7958505

約数列:

[1, 3, 43, 129, 251, 661, 753, 1983, 10793, 28423, 32379, 85269, 165911, 497733, 7134173, 21402519]

約数ペア:

[(1, 21402519), (3, 7134173), (43, 497733), (129, 165911), (251, 85269), (661, 32379), (753, 28423), (1983, 10793)]