21303448

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{163}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 43970040

約数和(自身を除く): 22666592

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 163, 248, 326, 527, 652, 961, 1054, 1304, 1922, 2108, 2771, 3844, 4216, 5053, 5542, 7688, 10106, 11084, 16337, 20212, 22168, 32674, 40424, 65348, 85901, 130696, 156643, 171802, 313286, 343604, 626572, 687208, 1253144, 2662931, 5325862, 10651724, 21303448]

約数ペア:

[(1, 21303448), (2, 10651724), (4, 5325862), (8, 2662931), (17, 1253144), (31, 687208), (34, 626572), (62, 343604), (68, 313286), (124, 171802), (136, 156643), (163, 130696), (248, 85901), (326, 65348), (527, 40424), (652, 32674), (961, 22168), (1054, 20212), (1304, 16337), (1922, 11084), (2108, 10106), (2771, 7688), (3844, 5542), (4216, 5053)]