28049021

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4003}}^1$

素因数の和:4041

約数の個数: 24

約数和(自身を含む): 38342304

約数和(自身を除く): 10293283

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 539, 637, 1001, 4003, 7007, 28021, 44033, 52039, 196147, 308231, 364273, 572429, 2157617, 2549911, 4007003, 28049021]

約数ペア:

[(1, 28049021), (7, 4007003), (11, 2549911), (13, 2157617), (49, 572429), (77, 364273), (91, 308231), (143, 196147), (539, 52039), (637, 44033), (1001, 28021), (4003, 7007)]