261080780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{1109}}^1$

素因数の和:1346

約数の個数: 48

約数和(自身を含む): 559440000

約数和(自身を除く): 298359220

約数列:

[1, 2, 4, 5, 10, 20, 79, 149, 158, 298, 316, 395, 596, 745, 790, 1109, 1490, 1580, 2218, 2980, 4436, 5545, 11090, 11771, 22180, 23542, 47084, 58855, 87611, 117710, 165241, 175222, 235420, 330482, 350444, 438055, 660964, 826205, 876110, 1652410, 1752220, 3304820, 13054039, 26108078, 52216156, 65270195, 130540390, 261080780]

約数ペア:

[(1, 261080780), (2, 130540390), (4, 65270195), (5, 52216156), (10, 26108078), (20, 13054039), (79, 3304820), (149, 1752220), (158, 1652410), (298, 876110), (316, 826205), (395, 660964), (596, 438055), (745, 350444), (790, 330482), (1109, 235420), (1490, 175222), (1580, 165241), (2218, 117710), (2980, 87611), (4436, 58855), (5545, 47084), (11090, 23542), (11771, 22180)]