1285286780

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{409327}}^1$

素因数の和:409493

約数の個数: 24

約数和(自身を含む): 2716300608

約数和(自身を除く): 1431013828

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 409327, 818654, 1637308, 2046635, 4093270, 8186540, 64264339, 128528678, 257057356, 321321695, 642643390, 1285286780]

約数ペア:

[(1, 1285286780), (2, 642643390), (4, 321321695), (5, 257057356), (10, 128528678), (20, 64264339), (157, 8186540), (314, 4093270), (628, 2046635), (785, 1637308), (1570, 818654), (3140, 409327)]