21225603

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53197}}^1$

素因数の和:53226

約数の個数: 16

約数和(自身を含む): 34046720

約数和(自身を除く): 12821117

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53197, 159591, 372379, 1010743, 1117137, 3032229, 7075201, 21225603]

約数ペア:

[(1, 21225603), (3, 7075201), (7, 3032229), (19, 1117137), (21, 1010743), (57, 372379), (133, 159591), (399, 53197)]