21042804

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 96

約数和(自身を含む): 56246400

約数和(自身を除く): 35203596

約数列:

[1, 2, 3, 4, 6, 12, 17, 19, 34, 38, 51, 57, 61, 68, 76, 89, 102, 114, 122, 178, 183, 204, 228, 244, 267, 323, 356, 366, 534, 646, 732, 969, 1037, 1068, 1159, 1292, 1513, 1691, 1938, 2074, 2318, 3026, 3111, 3382, 3477, 3876, 4148, 4539, 4636, 5073, 5429, 6052, 6222, 6764, 6954, 9078, 10146, 10858, 12444, 13908, 16287, 18156, 19703, 20292, 21716, 28747, 32574, 39406, 57494, 59109, 65148, 78812, 86241, 92293, 103151, 114988, 118218, 172482, 184586, 206302, 236436, 276879, 309453, 344964, 369172, 412604, 553758, 618906, 1107516, 1237812, 1753567, 3507134, 5260701, 7014268, 10521402, 21042804]

約数ペア:

[(1, 21042804), (2, 10521402), (3, 7014268), (4, 5260701), (6, 3507134), (12, 1753567), (17, 1237812), (19, 1107516), (34, 618906), (38, 553758), (51, 412604), (57, 369172), (61, 344964), (68, 309453), (76, 276879), (89, 236436), (102, 206302), (114, 184586), (122, 172482), (178, 118218), (183, 114988), (204, 103151), (228, 92293), (244, 86241), (267, 78812), (323, 65148), (356, 59109), (366, 57494), (534, 39406), (646, 32574), (732, 28747), (969, 21716), (1037, 20292), (1068, 19703), (1159, 18156), (1292, 16287), (1513, 13908), (1691, 12444), (1938, 10858), (2074, 10146), (2318, 9078), (3026, 6954), (3111, 6764), (3382, 6222), (3477, 6052), (3876, 5429), (4148, 5073), (4539, 4636)]