21216794494

素因数分解:

$2^1\times 7^2\times {\mathrm{521}}^1\times {\mathrm{415543}}^1$

素因数の和:416080

約数の個数: 24

約数和(自身を含む): 37092288528

約数和(自身を除く): 15875494034

約数列:

[1, 2, 7, 14, 49, 98, 521, 1042, 3647, 7294, 25529, 51058, 415543, 831086, 2908801, 5817602, 20361607, 40723214, 216497903, 432995806, 1515485321, 3030970642, 10608397247, 21216794494]

約数ペア:

[(1, 21216794494), (2, 10608397247), (7, 3030970642), (14, 1515485321), (49, 432995806), (98, 216497903), (521, 40723214), (1042, 20361607), (3647, 5817602), (7294, 2908801), (25529, 831086), (51058, 415543)]