21018448

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{389}}^1$

素因数の和:715

約数の個数: 40

約数和(自身を含む): 44684640

約数和(自身を除く): 23666192

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 307, 389, 614, 778, 1228, 1556, 2456, 3112, 3377, 4279, 4912, 6224, 6754, 8558, 13508, 17116, 27016, 34232, 54032, 68464, 119423, 238846, 477692, 955384, 1313653, 1910768, 2627306, 5254612, 10509224, 21018448]

約数ペア:

[(1, 21018448), (2, 10509224), (4, 5254612), (8, 2627306), (11, 1910768), (16, 1313653), (22, 955384), (44, 477692), (88, 238846), (176, 119423), (307, 68464), (389, 54032), (614, 34232), (778, 27016), (1228, 17116), (1556, 13508), (2456, 8558), (3112, 6754), (3377, 6224), (4279, 4912)]