19913121

素因数分解:

$3^5\times {\mathrm{19}}^2\times {\mathrm{227}}^1$

素因数の和:280

約数の個数: 36

約数和(自身を含む): 31619952

約数和(自身を除く): 11706831

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 227, 243, 361, 513, 681, 1083, 1539, 2043, 3249, 4313, 4617, 6129, 9747, 12939, 18387, 29241, 38817, 55161, 81947, 87723, 116451, 245841, 349353, 737523, 1048059, 2212569, 6637707, 19913121]

約数ペア:

[(1, 19913121), (3, 6637707), (9, 2212569), (19, 1048059), (27, 737523), (57, 349353), (81, 245841), (171, 116451), (227, 87723), (243, 81947), (361, 55161), (513, 38817), (681, 29241), (1083, 18387), (1539, 12939), (2043, 9747), (3249, 6129), (4313, 4617)]