20975248

素因数分解:

$2^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1367}}^1$

素因数の和:1519

約数の個数: 40

約数和(自身を含む): 46818432

約数和(自身を除く): 25843184

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 137, 274, 548, 959, 1096, 1367, 1918, 2192, 2734, 3836, 5468, 7672, 9569, 10936, 15344, 19138, 21872, 38276, 76552, 153104, 187279, 374558, 749116, 1310953, 1498232, 2621906, 2996464, 5243812, 10487624, 20975248]

約数ペア:

[(1, 20975248), (2, 10487624), (4, 5243812), (7, 2996464), (8, 2621906), (14, 1498232), (16, 1310953), (28, 749116), (56, 374558), (112, 187279), (137, 153104), (274, 76552), (548, 38276), (959, 21872), (1096, 19138), (1367, 15344), (1918, 10936), (2192, 9569), (2734, 7672), (3836, 5468)]