21563423

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{823}}^1$

素因数の和:1046

約数の個数: 16

約数和(自身を含む): 26104320

約数和(自身を除く): 4540897

約数列:

[1, 7, 19, 133, 197, 823, 1379, 3743, 5761, 15637, 26201, 109459, 162131, 1134917, 3080489, 21563423]

約数ペア:

[(1, 21563423), (7, 3080489), (19, 1134917), (133, 162131), (197, 109459), (823, 26201), (1379, 15637), (3743, 5761)]