81321944

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21491}}^1$

素因数の和:21551

約数の個数: 32

約数和(自身を含む): 170216640

約数和(自身を除く): 88894696

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 172, 344, 473, 946, 1892, 3784, 21491, 42982, 85964, 171928, 236401, 472802, 924113, 945604, 1848226, 1891208, 3696452, 7392904, 10165243, 20330486, 40660972, 81321944]

約数ペア:

[(1, 81321944), (2, 40660972), (4, 20330486), (8, 10165243), (11, 7392904), (22, 3696452), (43, 1891208), (44, 1848226), (86, 945604), (88, 924113), (172, 472802), (344, 236401), (473, 171928), (946, 85964), (1892, 42982), (3784, 21491)]