21310779

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{27427}}^1$

素因数の和:27474

約数の個数: 16

約数和(自身を含む): 33352448

約数和(自身を除く): 12041669

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 27427, 82281, 191989, 575967, 1014799, 3044397, 7103593, 21310779]

約数ペア:

[(1, 21310779), (3, 7103593), (7, 3044397), (21, 1014799), (37, 575967), (111, 191989), (259, 82281), (777, 27427)]