21000332143

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{1789}}^1\times {\mathrm{5843}}^1$

素因数の和:7687

約数の個数: 24

約数和(自身を含む): 25043059440

約数和(自身を除く): 4042727297

約数列:

[1, 7, 41, 49, 287, 1789, 2009, 5843, 12523, 40901, 73349, 87661, 239563, 286307, 513443, 1676941, 3594101, 10453127, 11738587, 73171889, 428578207, 512203223, 3000047449, 21000332143]

約数ペア:

[(1, 21000332143), (7, 3000047449), (41, 512203223), (49, 428578207), (287, 73171889), (1789, 11738587), (2009, 10453127), (5843, 3594101), (12523, 1676941), (40901, 513443), (73349, 286307), (87661, 239563)]