19903149

素因数分解:

$3^2\times 7^1\times {\mathrm{431}}^1\times {\mathrm{733}}^1$

素因数の和:1177

約数の個数: 24

約数和(自身を含む): 32977152

約数和(自身を除く): 13074003

約数列:

[1, 3, 7, 9, 21, 63, 431, 733, 1293, 2199, 3017, 3879, 5131, 6597, 9051, 15393, 27153, 46179, 315923, 947769, 2211461, 2843307, 6634383, 19903149]

約数ペア:

[(1, 19903149), (3, 6634383), (7, 2843307), (9, 2211461), (21, 947769), (63, 315923), (431, 46179), (733, 27153), (1293, 15393), (2199, 9051), (3017, 6597), (3879, 5131)]