81654716

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 172166400

約数和(自身を除く): 90511684

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 79, 139, 143, 158, 169, 278, 286, 316, 338, 556, 572, 676, 869, 1027, 1529, 1738, 1807, 1859, 2054, 3058, 3476, 3614, 3718, 4108, 6116, 7228, 7436, 10981, 11297, 13351, 19877, 21962, 22594, 23491, 26702, 39754, 43924, 45188, 46982, 53404, 79508, 93964, 120791, 142753, 146861, 241582, 258401, 285506, 293722, 483164, 516802, 571012, 587444, 1033604, 1570283, 1855789, 3140566, 3711578, 6281132, 7423156, 20413679, 40827358, 81654716]

約数ペア:

[(1, 81654716), (2, 40827358), (4, 20413679), (11, 7423156), (13, 6281132), (22, 3711578), (26, 3140566), (44, 1855789), (52, 1570283), (79, 1033604), (139, 587444), (143, 571012), (158, 516802), (169, 483164), (278, 293722), (286, 285506), (316, 258401), (338, 241582), (556, 146861), (572, 142753), (676, 120791), (869, 93964), (1027, 79508), (1529, 53404), (1738, 46982), (1807, 45188), (1859, 43924), (2054, 39754), (3058, 26702), (3476, 23491), (3614, 22594), (3718, 21962), (4108, 19877), (6116, 13351), (7228, 11297), (7436, 10981)]