638893490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{129593}}^1$

素因数の和:129646

約数の個数: 32

約数和(自身を含む): 1259653680

約数和(自身を除く): 620760190

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 85, 145, 170, 290, 493, 986, 2465, 4930, 129593, 259186, 647965, 1295930, 2203081, 3758197, 4406162, 7516394, 11015405, 18790985, 22030810, 37581970, 63889349, 127778698, 319446745, 638893490]

約数ペア:

[(1, 638893490), (2, 319446745), (5, 127778698), (10, 63889349), (17, 37581970), (29, 22030810), (34, 18790985), (58, 11015405), (85, 7516394), (145, 4406162), (170, 3758197), (290, 2203081), (493, 1295930), (986, 647965), (2465, 259186), (4930, 129593)]