21499768

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{50707}}^1$

素因数の和:50766

約数の個数: 16

約数和(自身を含む): 41073480

約数和(自身を除く): 19573712

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 50707, 101414, 202828, 405656, 2687471, 5374942, 10749884, 21499768]

約数ペア:

[(1, 21499768), (2, 10749884), (4, 5374942), (8, 2687471), (53, 405656), (106, 202828), (212, 101414), (424, 50707)]