21040768

素因数分解:

$2^7\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1021}}^1$

素因数の和:1065

約数の個数: 64

約数和(自身を含む): 50037120

約数和(自身を除く): 28996352

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 322, 368, 448, 644, 736, 896, 1021, 1288, 1472, 2042, 2576, 2944, 4084, 5152, 7147, 8168, 10304, 14294, 16336, 20608, 23483, 28588, 32672, 46966, 57176, 65344, 93932, 114352, 130688, 164381, 187864, 228704, 328762, 375728, 457408, 657524, 751456, 914816, 1315048, 1502912, 2630096, 3005824, 5260192, 10520384, 21040768]

約数ペア:

[(1, 21040768), (2, 10520384), (4, 5260192), (7, 3005824), (8, 2630096), (14, 1502912), (16, 1315048), (23, 914816), (28, 751456), (32, 657524), (46, 457408), (56, 375728), (64, 328762), (92, 228704), (112, 187864), (128, 164381), (161, 130688), (184, 114352), (224, 93932), (322, 65344), (368, 57176), (448, 46966), (644, 32672), (736, 28588), (896, 23483), (1021, 20608), (1288, 16336), (1472, 14294), (2042, 10304), (2576, 8168), (2944, 7147), (4084, 5152)]