21556503

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{16987}}^1$

素因数の和:17043

約数の個数: 16

約数和(自身を含む): 32616960

約数和(自身を除く): 11060457

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 16987, 50961, 152883, 458649, 798389, 2395167, 7185501, 21556503]

約数ペア:

[(1, 21556503), (3, 7185501), (9, 2395167), (27, 798389), (47, 458649), (141, 152883), (423, 50961), (1269, 16987)]