1391020

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{443}}^1$

素因数の和:609

約数の個数: 24

約数和(自身を含む): 2946384

約数和(自身を除く): 1555364

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 443, 628, 785, 886, 1570, 1772, 2215, 3140, 4430, 8860, 69551, 139102, 278204, 347755, 695510, 1391020]

約数ペア:

[(1, 1391020), (2, 695510), (4, 347755), (5, 278204), (10, 139102), (20, 69551), (157, 8860), (314, 4430), (443, 3140), (628, 2215), (785, 1772), (886, 1570)]