21130949

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 26998272

約数和(自身を除く): 5867323

約数列:

[1, 7, 17, 41, 61, 71, 119, 287, 427, 497, 697, 1037, 1207, 2501, 2911, 4331, 4879, 7259, 8449, 17507, 20377, 30317, 42517, 49487, 73627, 177571, 297619, 346409, 515389, 1242997, 3018707, 21130949]

約数ペア:

[(1, 21130949), (7, 3018707), (17, 1242997), (41, 515389), (61, 346409), (71, 297619), (119, 177571), (287, 73627), (427, 49487), (497, 42517), (697, 30317), (1037, 20377), (1207, 17507), (2501, 8449), (2911, 7259), (4331, 4879)]