20262781

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{509}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 26046720

約数和(自身を除く): 5783939

約数列:

[1, 7, 11, 47, 77, 121, 329, 509, 517, 847, 3563, 3619, 5599, 5687, 23923, 39193, 39809, 61589, 167461, 263153, 431123, 1842071, 2894683, 20262781]

約数ペア:

[(1, 20262781), (7, 2894683), (11, 1842071), (47, 431123), (77, 263153), (121, 167461), (329, 61589), (509, 39809), (517, 39193), (847, 23923), (3563, 5687), (3619, 5599)]