21182992

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{643}}^1$

素因数の和:751

約数の個数: 40

約数和(自身を含む): 43122240

約数和(自身を除く): 21939248

約数列:

[1, 2, 4, 8, 16, 29, 58, 71, 116, 142, 232, 284, 464, 568, 643, 1136, 1286, 2059, 2572, 4118, 5144, 8236, 10288, 16472, 18647, 32944, 37294, 45653, 74588, 91306, 149176, 182612, 298352, 365224, 730448, 1323937, 2647874, 5295748, 10591496, 21182992]

約数ペア:

[(1, 21182992), (2, 10591496), (4, 5295748), (8, 2647874), (16, 1323937), (29, 730448), (58, 365224), (71, 298352), (116, 182612), (142, 149176), (232, 91306), (284, 74588), (464, 45653), (568, 37294), (643, 32944), (1136, 18647), (1286, 16472), (2059, 10288), (2572, 8236), (4118, 5144)]