21572728

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{1249}}^1$

素因数の和:1399

約数の個数: 32

約数和(自身を含む): 43200000

約数和(自身を除く): 21627272

約数列:

[1, 2, 4, 8, 17, 34, 68, 127, 136, 254, 508, 1016, 1249, 2159, 2498, 4318, 4996, 8636, 9992, 17272, 21233, 42466, 84932, 158623, 169864, 317246, 634492, 1268984, 2696591, 5393182, 10786364, 21572728]

約数ペア:

[(1, 21572728), (2, 10786364), (4, 5393182), (8, 2696591), (17, 1268984), (34, 634492), (68, 317246), (127, 169864), (136, 158623), (254, 84932), (508, 42466), (1016, 21233), (1249, 17272), (2159, 9992), (2498, 8636), (4318, 4996)]