20609312

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 42239232

約数和(自身を除く): 21629920

約数列:

[1, 2, 4, 8, 16, 32, 47, 71, 94, 142, 188, 193, 284, 376, 386, 568, 752, 772, 1136, 1504, 1544, 2272, 3088, 3337, 6176, 6674, 9071, 13348, 13703, 18142, 26696, 27406, 36284, 53392, 54812, 72568, 106784, 109624, 145136, 219248, 290272, 438496, 644041, 1288082, 2576164, 5152328, 10304656, 20609312]

約数ペア:

[(1, 20609312), (2, 10304656), (4, 5152328), (8, 2576164), (16, 1288082), (32, 644041), (47, 438496), (71, 290272), (94, 219248), (142, 145136), (188, 109624), (193, 106784), (284, 72568), (376, 54812), (386, 53392), (568, 36284), (752, 27406), (772, 26696), (1136, 18142), (1504, 13703), (1544, 13348), (2272, 9071), (3088, 6674), (3337, 6176)]