21209090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{4967}}^1$

素因数の和:5042

約数の個数: 32

約数和(自身を含む): 44354304

約数和(自身を除く): 23145214

約数列:

[1, 2, 5, 7, 10, 14, 35, 61, 70, 122, 305, 427, 610, 854, 2135, 4270, 4967, 9934, 24835, 34769, 49670, 69538, 173845, 302987, 347690, 605974, 1514935, 2120909, 3029870, 4241818, 10604545, 21209090]

約数ペア:

[(1, 21209090), (2, 10604545), (5, 4241818), (7, 3029870), (10, 2120909), (14, 1514935), (35, 605974), (61, 347690), (70, 302987), (122, 173845), (305, 69538), (427, 49670), (610, 34769), (854, 24835), (2135, 9934), (4270, 4967)]