1276390

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1171}}^1$

素因数の和:1287

約数の個数: 16

約数和(自身を含む): 2320560

約数和(自身を除く): 1044170

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 1171, 2342, 5855, 11710, 127639, 255278, 638195, 1276390]

約数ペア:

[(1, 1276390), (2, 638195), (5, 255278), (10, 127639), (109, 11710), (218, 5855), (545, 2342), (1090, 1171)]