21740768

素因数分解:

$2^5\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1367}}^1$

素因数の和:1455

約数の個数: 48

約数和(自身を含む): 49641984

約数和(自身を除く): 27901216

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 71, 112, 142, 224, 284, 497, 568, 994, 1136, 1367, 1988, 2272, 2734, 3976, 5468, 7952, 9569, 10936, 15904, 19138, 21872, 38276, 43744, 76552, 97057, 153104, 194114, 306208, 388228, 679399, 776456, 1358798, 1552912, 2717596, 3105824, 5435192, 10870384, 21740768]

約数ペア:

[(1, 21740768), (2, 10870384), (4, 5435192), (7, 3105824), (8, 2717596), (14, 1552912), (16, 1358798), (28, 776456), (32, 679399), (56, 388228), (71, 306208), (112, 194114), (142, 153104), (224, 97057), (284, 76552), (497, 43744), (568, 38276), (994, 21872), (1136, 19138), (1367, 15904), (1988, 10936), (2272, 9569), (2734, 7952), (3976, 5468)]