21084640

素因数分解:

$2^5\times 5^1\times {\mathrm{131779}}^1$

素因数の和:131794

約数の個数: 24

約数和(自身を含む): 49812840

約数和(自身を除く): 28728200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131779, 263558, 527116, 658895, 1054232, 1317790, 2108464, 2635580, 4216928, 5271160, 10542320, 21084640]

約数ペア:

[(1, 21084640), (2, 10542320), (4, 5271160), (5, 4216928), (8, 2635580), (10, 2108464), (16, 1317790), (20, 1054232), (32, 658895), (40, 527116), (80, 263558), (160, 131779)]