219991681

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{39631}}^1$

素因数の和:39712

約数の個数: 16

約数和(自身を含む): 275204608

約数和(自身を除く): 55212927

約数列:

[1, 7, 13, 61, 91, 427, 793, 5551, 39631, 277417, 515203, 2417491, 3606421, 16922437, 31427383, 219991681]

約数ペア:

[(1, 219991681), (7, 31427383), (13, 16922437), (61, 3606421), (91, 2417491), (427, 515203), (793, 277417), (5551, 39631)]