19899095

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{293}}^1$

素因数の和:379

約数の個数: 24

約数和(自身を含む): 25994304

約数和(自身を除く): 6095209

約数列:

[1, 5, 17, 47, 85, 235, 289, 293, 799, 1445, 1465, 3995, 4981, 13583, 13771, 24905, 67915, 68855, 84677, 234107, 423385, 1170535, 3979819, 19899095]

約数ペア:

[(1, 19899095), (5, 3979819), (17, 1170535), (47, 423385), (85, 234107), (235, 84677), (289, 68855), (293, 67915), (799, 24905), (1445, 13771), (1465, 13583), (3995, 4981)]