128561390

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{144451}}^1$

素因数の和:144547

約数の個数: 16

約数和(自身を含む): 234012240

約数和(自身を除く): 105450850

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 144451, 288902, 722255, 1444510, 12856139, 25712278, 64280695, 128561390]

約数ペア:

[(1, 128561390), (2, 64280695), (5, 25712278), (10, 12856139), (89, 1444510), (178, 722255), (445, 288902), (890, 144451)]