256495880

素因数分解:

$2^3\times 5^1\times {\mathrm{1291}}^1\times {\mathrm{4967}}^1$

素因数の和:6269

約数の個数: 32

約数和(自身を含む): 577679040

約数和(自身を除く): 321183160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1291, 2582, 4967, 5164, 6455, 9934, 10328, 12910, 19868, 24835, 25820, 39736, 49670, 51640, 99340, 198680, 6412397, 12824794, 25649588, 32061985, 51299176, 64123970, 128247940, 256495880]

約数ペア:

[(1, 256495880), (2, 128247940), (4, 64123970), (5, 51299176), (8, 32061985), (10, 25649588), (20, 12824794), (40, 6412397), (1291, 198680), (2582, 99340), (4967, 51640), (5164, 49670), (6455, 39736), (9934, 25820), (10328, 24835), (12910, 19868)]