21025088

素因数分解:

$2^6\times 7^1\times {\mathrm{71}}^1\times {\mathrm{661}}^1$

素因数の和:751

約数の個数: 56

約数和(自身を含む): 48426624

約数和(自身を除く): 27401536

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 71, 112, 142, 224, 284, 448, 497, 568, 661, 994, 1136, 1322, 1988, 2272, 2644, 3976, 4544, 4627, 5288, 7952, 9254, 10576, 15904, 18508, 21152, 31808, 37016, 42304, 46931, 74032, 93862, 148064, 187724, 296128, 328517, 375448, 657034, 750896, 1314068, 1501792, 2628136, 3003584, 5256272, 10512544, 21025088]

約数ペア:

[(1, 21025088), (2, 10512544), (4, 5256272), (7, 3003584), (8, 2628136), (14, 1501792), (16, 1314068), (28, 750896), (32, 657034), (56, 375448), (64, 328517), (71, 296128), (112, 187724), (142, 148064), (224, 93862), (284, 74032), (448, 46931), (497, 42304), (568, 37016), (661, 31808), (994, 21152), (1136, 18508), (1322, 15904), (1988, 10576), (2272, 9254), (2644, 7952), (3976, 5288), (4544, 4627)]