22778721

素因数分解:

$3^2\times 7^1\times {\mathrm{547}}^1\times {\mathrm{661}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 37728704

約数和(自身を除く): 14949983

約数列:

[1, 3, 7, 9, 21, 63, 547, 661, 1641, 1983, 3829, 4627, 4923, 5949, 11487, 13881, 34461, 41643, 361567, 1084701, 2530969, 3254103, 7592907, 22778721]

約数ペア:

[(1, 22778721), (3, 7592907), (7, 3254103), (9, 2530969), (21, 1084701), (63, 361567), (547, 41643), (661, 34461), (1641, 13881), (1983, 11487), (3829, 5949), (4627, 4923)]