78291801

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 133645824

約数和(自身を除く): 55354023

約数列:

[1, 3, 7, 9, 21, 47, 63, 137, 141, 193, 329, 411, 423, 579, 959, 987, 1233, 1351, 1737, 2877, 2961, 4053, 6439, 8631, 9071, 12159, 19317, 26441, 27213, 45073, 57951, 63497, 79323, 81639, 135219, 185087, 190491, 237969, 405657, 555261, 571473, 1242727, 1665783, 3728181, 8699089, 11184543, 26097267, 78291801]

約数ペア:

[(1, 78291801), (3, 26097267), (7, 11184543), (9, 8699089), (21, 3728181), (47, 1665783), (63, 1242727), (137, 571473), (141, 555261), (193, 405657), (329, 237969), (411, 190491), (423, 185087), (579, 135219), (959, 81639), (987, 79323), (1233, 63497), (1351, 57951), (1737, 45073), (2877, 27213), (2961, 26441), (4053, 19317), (6439, 12159), (8631, 9071)]