257440510

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{2081}}^1$

素因数の和:2316

約数の個数: 32

約数和(自身を含む): 472197600

約数和(自身を除く): 214757090

約数列:

[1, 2, 5, 10, 89, 139, 178, 278, 445, 695, 890, 1390, 2081, 4162, 10405, 12371, 20810, 24742, 61855, 123710, 185209, 289259, 370418, 578518, 926045, 1446295, 1852090, 2892590, 25744051, 51488102, 128720255, 257440510]

約数ペア:

[(1, 257440510), (2, 128720255), (5, 51488102), (10, 25744051), (89, 2892590), (139, 1852090), (178, 1446295), (278, 926045), (445, 578518), (695, 370418), (890, 289259), (1390, 185209), (2081, 123710), (4162, 61855), (10405, 24742), (12371, 20810)]