28229020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15859}}^1$

素因数の和:15957

約数の個数: 24

約数和(自身を含む): 59950800

約数和(自身を除く): 31721780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 15859, 31718, 63436, 79295, 158590, 317180, 1411451, 2822902, 5645804, 7057255, 14114510, 28229020]

約数ペア:

[(1, 28229020), (2, 14114510), (4, 7057255), (5, 5645804), (10, 2822902), (20, 1411451), (89, 317180), (178, 158590), (356, 79295), (445, 63436), (890, 31718), (1780, 15859)]