21645344

素因数分解:

$2^5\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1361}}^1$

素因数の和:1449

約数の個数: 48

約数和(自身を含む): 49424256

約数和(自身を除く): 27778912

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 71, 112, 142, 224, 284, 497, 568, 994, 1136, 1361, 1988, 2272, 2722, 3976, 5444, 7952, 9527, 10888, 15904, 19054, 21776, 38108, 43552, 76216, 96631, 152432, 193262, 304864, 386524, 676417, 773048, 1352834, 1546096, 2705668, 3092192, 5411336, 10822672, 21645344]

約数ペア:

[(1, 21645344), (2, 10822672), (4, 5411336), (7, 3092192), (8, 2705668), (14, 1546096), (16, 1352834), (28, 773048), (32, 676417), (56, 386524), (71, 304864), (112, 193262), (142, 152432), (224, 96631), (284, 76216), (497, 43552), (568, 38108), (994, 21776), (1136, 19054), (1361, 15904), (1988, 10888), (2272, 9527), (2722, 7952), (3976, 5444)]