21002319

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2459}}^1$

素因数の和:2551

約数の個数: 24

約数和(自身を含む): 33131280

約数和(自身を除く): 12128961

約数列:

[1, 3, 9, 13, 39, 73, 117, 219, 657, 949, 2459, 2847, 7377, 8541, 22131, 31967, 95901, 179507, 287703, 538521, 1615563, 2333591, 7000773, 21002319]

約数ペア:

[(1, 21002319), (3, 7000773), (9, 2333591), (13, 1615563), (39, 538521), (73, 287703), (117, 179507), (219, 95901), (657, 31967), (949, 22131), (2459, 8541), (2847, 7377)]