19888351

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4517}}^1$

素因数の和:4578

約数の個数: 16

約数和(自身を含む): 24722496

約数和(自身を除く): 4834145

約数列:

[1, 7, 17, 37, 119, 259, 629, 4403, 4517, 31619, 76789, 167129, 537523, 1169903, 2841193, 19888351]

約数ペア:

[(1, 19888351), (7, 2841193), (17, 1169903), (37, 537523), (119, 167129), (259, 76789), (629, 31619), (4403, 4517)]