20925646

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 38988000

約数和(自身を除く): 18062354

約数列:

[1, 2, 7, 14, 29, 37, 49, 58, 74, 98, 199, 203, 259, 398, 406, 518, 1073, 1393, 1421, 1813, 2146, 2786, 2842, 3626, 5771, 7363, 7511, 9751, 11542, 14726, 15022, 19502, 40397, 51541, 52577, 80794, 103082, 105154, 213527, 282779, 360787, 427054, 565558, 721574, 1494689, 2989378, 10462823, 20925646]

約数ペア:

[(1, 20925646), (2, 10462823), (7, 2989378), (14, 1494689), (29, 721574), (37, 565558), (49, 427054), (58, 360787), (74, 282779), (98, 213527), (199, 105154), (203, 103082), (259, 80794), (398, 52577), (406, 51541), (518, 40397), (1073, 19502), (1393, 15022), (1421, 14726), (1813, 11542), (2146, 9751), (2786, 7511), (2842, 7363), (3626, 5771)]