21165357

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{4663}}^1$

素因数の和:4772

約数の個数: 16

約数和(自身を含む): 30222720

約数和(自身を除く): 9057363

約数列:

[1, 3, 17, 51, 89, 267, 1513, 4539, 4663, 13989, 79271, 237813, 415007, 1245021, 7055119, 21165357]

約数ペア:

[(1, 21165357), (3, 7055119), (17, 1245021), (51, 415007), (89, 237813), (267, 79271), (1513, 13989), (4539, 4663)]