11972920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{6961}}^1$

素因数の和:7015

約数の個数: 32

約数和(自身を含む): 27569520

約数和(自身を除く): 15596600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 6961, 13922, 27844, 34805, 55688, 69610, 139220, 278440, 299323, 598646, 1197292, 1496615, 2394584, 2993230, 5986460, 11972920]

約数ペア:

[(1, 11972920), (2, 5986460), (4, 2993230), (5, 2394584), (8, 1496615), (10, 1197292), (20, 598646), (40, 299323), (43, 278440), (86, 139220), (172, 69610), (215, 55688), (344, 34805), (430, 27844), (860, 13922), (1720, 6961)]