858489993

素因数分解:

$3^2\times {\mathrm{139}}^2\times {\mathrm{4937}}^1$

素因数の和:5221

約数の個数: 18

約数和(自身を含む): 1249279434

約数和(自身を除く): 390789441

約数列:

[1, 3, 9, 139, 417, 1251, 4937, 14811, 19321, 44433, 57963, 173889, 686243, 2058729, 6176187, 95387777, 286163331, 858489993]

約数ペア:

[(1, 858489993), (3, 286163331), (9, 95387777), (139, 6176187), (417, 2058729), (1251, 686243), (4937, 173889), (14811, 57963), (19321, 44433)]