80536720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1289}}^1$

素因数の和:1384

約数の個数: 80

約数和(自身を含む): 207308160

約数和(自身を除く): 126771440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 440, 568, 710, 781, 880, 1136, 1289, 1420, 1562, 2578, 2840, 3124, 3905, 5156, 5680, 6248, 6445, 7810, 10312, 12496, 12890, 14179, 15620, 20624, 25780, 28358, 31240, 51560, 56716, 62480, 70895, 91519, 103120, 113432, 141790, 183038, 226864, 283580, 366076, 457595, 567160, 732152, 915190, 1006709, 1134320, 1464304, 1830380, 2013418, 3660760, 4026836, 5033545, 7321520, 8053672, 10067090, 16107344, 20134180, 40268360, 80536720]

約数ペア:

[(1, 80536720), (2, 40268360), (4, 20134180), (5, 16107344), (8, 10067090), (10, 8053672), (11, 7321520), (16, 5033545), (20, 4026836), (22, 3660760), (40, 2013418), (44, 1830380), (55, 1464304), (71, 1134320), (80, 1006709), (88, 915190), (110, 732152), (142, 567160), (176, 457595), (220, 366076), (284, 283580), (355, 226864), (440, 183038), (568, 141790), (710, 113432), (781, 103120), (880, 91519), (1136, 70895), (1289, 62480), (1420, 56716), (1562, 51560), (2578, 31240), (2840, 28358), (3124, 25780), (3905, 20624), (5156, 15620), (5680, 14179), (6248, 12890), (6445, 12496), (7810, 10312)]