81387684

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2963}}^1$

素因数の和:3089

約数の個数: 72

約数和(自身を含む): 237357120

約数和(自身を除く): 155969436

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 109, 126, 218, 252, 327, 436, 654, 763, 981, 1308, 1526, 1962, 2289, 2963, 3052, 3924, 4578, 5926, 6867, 8889, 9156, 11852, 13734, 17778, 20741, 26667, 27468, 35556, 41482, 53334, 62223, 82964, 106668, 124446, 186669, 248892, 322967, 373338, 645934, 746676, 968901, 1291868, 1937802, 2260769, 2906703, 3875604, 4521538, 5813406, 6782307, 9043076, 11626812, 13564614, 20346921, 27129228, 40693842, 81387684]

約数ペア:

[(1, 81387684), (2, 40693842), (3, 27129228), (4, 20346921), (6, 13564614), (7, 11626812), (9, 9043076), (12, 6782307), (14, 5813406), (18, 4521538), (21, 3875604), (28, 2906703), (36, 2260769), (42, 1937802), (63, 1291868), (84, 968901), (109, 746676), (126, 645934), (218, 373338), (252, 322967), (327, 248892), (436, 186669), (654, 124446), (763, 106668), (981, 82964), (1308, 62223), (1526, 53334), (1962, 41482), (2289, 35556), (2963, 27468), (3052, 26667), (3924, 20741), (4578, 17778), (5926, 13734), (6867, 11852), (8889, 9156)]