20145328

素因数分解:

$2^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:194

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 26994512

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 43, 47, 56, 86, 89, 94, 112, 172, 178, 188, 301, 329, 344, 356, 376, 602, 623, 658, 688, 712, 752, 1204, 1246, 1316, 1424, 2021, 2408, 2492, 2632, 3827, 4042, 4183, 4816, 4984, 5264, 7654, 8084, 8366, 9968, 14147, 15308, 16168, 16732, 26789, 28294, 29281, 30616, 32336, 33464, 53578, 56588, 58562, 61232, 66928, 107156, 113176, 117124, 179869, 214312, 226352, 234248, 359738, 428624, 468496, 719476, 1259083, 1438952, 2518166, 2877904, 5036332, 10072664, 20145328]

約数ペア:

[(1, 20145328), (2, 10072664), (4, 5036332), (7, 2877904), (8, 2518166), (14, 1438952), (16, 1259083), (28, 719476), (43, 468496), (47, 428624), (56, 359738), (86, 234248), (89, 226352), (94, 214312), (112, 179869), (172, 117124), (178, 113176), (188, 107156), (301, 66928), (329, 61232), (344, 58562), (356, 56588), (376, 53578), (602, 33464), (623, 32336), (658, 30616), (688, 29281), (712, 28294), (752, 26789), (1204, 16732), (1246, 16168), (1316, 15308), (1424, 14147), (2021, 9968), (2408, 8366), (2492, 8084), (2632, 7654), (3827, 5264), (4042, 4984), (4183, 4816)]