642983265

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1987}}^1$

素因数の和:2068

約数の個数: 80

約数和(自身を含む): 1247000832

約数和(自身を除く): 604017567

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 47, 51, 81, 85, 135, 141, 153, 235, 255, 405, 423, 459, 705, 765, 799, 1269, 1377, 1987, 2115, 2295, 2397, 3807, 3995, 5961, 6345, 6885, 7191, 9935, 11985, 17883, 19035, 21573, 29805, 33779, 35955, 53649, 64719, 89415, 93389, 101337, 107865, 160947, 168895, 268245, 280167, 304011, 323595, 466945, 506685, 804735, 840501, 912033, 1400835, 1520055, 1587613, 2521503, 2736099, 4202505, 4560165, 4762839, 7564509, 7938065, 12607515, 13680495, 14288517, 23814195, 37822545, 42865551, 71442585, 128596653, 214327755, 642983265]

約数ペア:

[(1, 642983265), (3, 214327755), (5, 128596653), (9, 71442585), (15, 42865551), (17, 37822545), (27, 23814195), (45, 14288517), (47, 13680495), (51, 12607515), (81, 7938065), (85, 7564509), (135, 4762839), (141, 4560165), (153, 4202505), (235, 2736099), (255, 2521503), (405, 1587613), (423, 1520055), (459, 1400835), (705, 912033), (765, 840501), (799, 804735), (1269, 506685), (1377, 466945), (1987, 323595), (2115, 304011), (2295, 280167), (2397, 268245), (3807, 168895), (3995, 160947), (5961, 107865), (6345, 101337), (6885, 93389), (7191, 89415), (9935, 64719), (11985, 53649), (17883, 35955), (19035, 33779), (21573, 29805)]