19997547

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{719}}^1$

素因数の和:922

約数の個数: 16

約数和(自身を含む): 27279360

約数和(自身を除く): 7281813

約数列:

[1, 3, 73, 127, 219, 381, 719, 2157, 9271, 27813, 52487, 91313, 157461, 273939, 6665849, 19997547]

約数ペア:

[(1, 19997547), (3, 6665849), (73, 273939), (127, 157461), (219, 91313), (381, 52487), (719, 27813), (2157, 9271)]