21744891

素因数分解:

$3^2\times 7^1\times {\mathrm{547}}^1\times {\mathrm{631}}^1$

素因数の和:1191

約数の個数: 24

約数和(自身を含む): 36018944

約数和(自身を除く): 14274053

約数列:

[1, 3, 7, 9, 21, 63, 547, 631, 1641, 1893, 3829, 4417, 4923, 5679, 11487, 13251, 34461, 39753, 345157, 1035471, 2416099, 3106413, 7248297, 21744891]

約数ペア:

[(1, 21744891), (3, 7248297), (7, 3106413), (9, 2416099), (21, 1035471), (63, 345157), (547, 39753), (631, 34461), (1641, 13251), (1893, 11487), (3829, 5679), (4417, 4923)]