21726187

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:199

約数の個数: 32

約数和(自身を含む): 27748224

約数和(自身を除く): 6022037

約数列:

[1, 7, 17, 41, 61, 73, 119, 287, 427, 511, 697, 1037, 1241, 2501, 2993, 4453, 4879, 7259, 8687, 17507, 20951, 31171, 42517, 50881, 75701, 182573, 297619, 356167, 529907, 1278011, 3103741, 21726187]

約数ペア:

[(1, 21726187), (7, 3103741), (17, 1278011), (41, 529907), (61, 356167), (73, 297619), (119, 182573), (287, 75701), (427, 50881), (511, 42517), (697, 31171), (1037, 20951), (1241, 17507), (2501, 8687), (2993, 7259), (4453, 4879)]