21181713

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53087}}^1$

素因数の和:53116

約数の個数: 16

約数和(自身を含む): 33976320

約数和(自身を除く): 12794607

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53087, 159261, 371609, 1008653, 1114827, 3025959, 7060571, 21181713]

約数ペア:

[(1, 21181713), (3, 7060571), (7, 3025959), (19, 1114827), (21, 1008653), (57, 371609), (133, 159261), (399, 53087)]