81123156

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{463}}^1$

素因数の和:661

約数の個数: 72

約数和(自身を含む): 213484544

約数和(自身を除く): 132361388

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 124, 157, 186, 279, 314, 372, 463, 471, 558, 628, 926, 942, 1116, 1389, 1413, 1852, 1884, 2778, 2826, 4167, 4867, 5556, 5652, 8334, 9734, 14353, 14601, 16668, 19468, 28706, 29202, 43059, 43803, 57412, 58404, 72691, 86118, 87606, 129177, 145382, 172236, 175212, 218073, 258354, 290764, 436146, 516708, 654219, 872292, 1308438, 2253421, 2616876, 4506842, 6760263, 9013684, 13520526, 20280789, 27041052, 40561578, 81123156]

約数ペア:

[(1, 81123156), (2, 40561578), (3, 27041052), (4, 20280789), (6, 13520526), (9, 9013684), (12, 6760263), (18, 4506842), (31, 2616876), (36, 2253421), (62, 1308438), (93, 872292), (124, 654219), (157, 516708), (186, 436146), (279, 290764), (314, 258354), (372, 218073), (463, 175212), (471, 172236), (558, 145382), (628, 129177), (926, 87606), (942, 86118), (1116, 72691), (1389, 58404), (1413, 57412), (1852, 43803), (1884, 43059), (2778, 29202), (2826, 28706), (4167, 19468), (4867, 16668), (5556, 14601), (5652, 14353), (8334, 9734)]