78021909

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{347}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 133765632

約数和(自身を除く): 55743723

約数列:

[1, 3, 7, 9, 21, 43, 63, 83, 129, 249, 301, 347, 387, 581, 747, 903, 1041, 1743, 2429, 2709, 3123, 3569, 5229, 7287, 10707, 14921, 21861, 24983, 28801, 32121, 44763, 74949, 86403, 104447, 134289, 201607, 224847, 259209, 313341, 604821, 940023, 1238443, 1814463, 3715329, 8669101, 11145987, 26007303, 78021909]

約数ペア:

[(1, 78021909), (3, 26007303), (7, 11145987), (9, 8669101), (21, 3715329), (43, 1814463), (63, 1238443), (83, 940023), (129, 604821), (249, 313341), (301, 259209), (347, 224847), (387, 201607), (581, 134289), (747, 104447), (903, 86403), (1041, 74949), (1743, 44763), (2429, 32121), (2709, 28801), (3123, 24983), (3569, 21861), (5229, 14921), (7287, 10707)]