20971444

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 41291712

約数和(自身を除く): 20320268

約数列:

[1, 2, 4, 13, 26, 43, 52, 83, 86, 113, 166, 172, 226, 332, 452, 559, 1079, 1118, 1469, 2158, 2236, 2938, 3569, 4316, 4859, 5876, 7138, 9379, 9718, 14276, 18758, 19436, 37516, 46397, 63167, 92794, 121927, 126334, 185588, 243854, 252668, 403297, 487708, 806594, 1613188, 5242861, 10485722, 20971444]

約数ペア:

[(1, 20971444), (2, 10485722), (4, 5242861), (13, 1613188), (26, 806594), (43, 487708), (52, 403297), (83, 252668), (86, 243854), (113, 185588), (166, 126334), (172, 121927), (226, 92794), (332, 63167), (452, 46397), (559, 37516), (1079, 19436), (1118, 18758), (1469, 14276), (2158, 9718), (2236, 9379), (2938, 7138), (3569, 5876), (4316, 4859)]