25660780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 55440000

約数和(自身を除く): 29779220

約数列:

[1, 2, 4, 5, 10, 20, 79, 109, 149, 158, 218, 298, 316, 395, 436, 545, 596, 745, 790, 1090, 1490, 1580, 2180, 2980, 8611, 11771, 16241, 17222, 23542, 32482, 34444, 43055, 47084, 58855, 64964, 81205, 86110, 117710, 162410, 172220, 235420, 324820, 1283039, 2566078, 5132156, 6415195, 12830390, 25660780]

約数ペア:

[(1, 25660780), (2, 12830390), (4, 6415195), (5, 5132156), (10, 2566078), (20, 1283039), (79, 324820), (109, 235420), (149, 172220), (158, 162410), (218, 117710), (298, 86110), (316, 81205), (395, 64964), (436, 58855), (545, 47084), (596, 43055), (745, 34444), (790, 32482), (1090, 23542), (1490, 17222), (1580, 16241), (2180, 11771), (2980, 8611)]