19878265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{4951}}^1$

素因数の和:5040

約数の個数: 16

約数和(自身を含む): 26384256

約数和(自身を除く): 6505991

約数列:

[1, 5, 11, 55, 73, 365, 803, 4015, 4951, 24755, 54461, 272305, 361423, 1807115, 3975653, 19878265]

約数ペア:

[(1, 19878265), (5, 3975653), (11, 1807115), (55, 361423), (73, 272305), (365, 54461), (803, 24755), (4015, 4951)]