19997327

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{4283}}^1$

素因数の和:4342

約数の個数: 16

約数和(自身を含む): 24675840

約数和(自身を除く): 4678513

約数列:

[1, 7, 23, 29, 161, 203, 667, 4283, 4669, 29981, 98509, 124207, 689563, 869449, 2856761, 19997327]

約数ペア:

[(1, 19997327), (7, 2856761), (23, 869449), (29, 689563), (161, 124207), (203, 98509), (667, 29981), (4283, 4669)]