266779600

素因数分解:

$2^4\times 5^2\times {\mathrm{661}}^1\times {\mathrm{1009}}^1$

素因数の和:1688

約数の個数: 60

約数和(自身を含む): 642543820

約数和(自身を除く): 375764220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 661, 1009, 1322, 2018, 2644, 3305, 4036, 5045, 5288, 6610, 8072, 10090, 10576, 13220, 16144, 16525, 20180, 25225, 26440, 33050, 40360, 50450, 52880, 66100, 80720, 100900, 132200, 201800, 264400, 403600, 666949, 1333898, 2667796, 3334745, 5335592, 6669490, 10671184, 13338980, 16673725, 26677960, 33347450, 53355920, 66694900, 133389800, 266779600]

約数ペア:

[(1, 266779600), (2, 133389800), (4, 66694900), (5, 53355920), (8, 33347450), (10, 26677960), (16, 16673725), (20, 13338980), (25, 10671184), (40, 6669490), (50, 5335592), (80, 3334745), (100, 2667796), (200, 1333898), (400, 666949), (661, 403600), (1009, 264400), (1322, 201800), (2018, 132200), (2644, 100900), (3305, 80720), (4036, 66100), (5045, 52880), (5288, 50450), (6610, 40360), (8072, 33050), (10090, 26440), (10576, 25225), (13220, 20180), (16144, 16525)]