21000947989

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{6397}}^1\times {\mathrm{7949}}^1$

素因数の和:14412

約数の個数: 16

約数和(自身を含む): 24414768000

約数和(自身を除く): 3413820011

約数列:

[1, 7, 59, 413, 6397, 7949, 44779, 55643, 377423, 468991, 2641961, 3282937, 50849753, 355948271, 3000135427, 21000947989]

約数ペア:

[(1, 21000947989), (7, 3000135427), (59, 355948271), (413, 50849753), (6397, 3282937), (7949, 2641961), (44779, 468991), (55643, 377423)]