247157421

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{641}}^1$

素因数の和:762

約数の個数: 48

約数和(自身を含む): 399313728

約数和(自身を除く): 152156307

約数列:

[1, 3, 7, 21, 43, 49, 61, 129, 147, 183, 301, 427, 641, 903, 1281, 1923, 2107, 2623, 2989, 4487, 6321, 7869, 8967, 13461, 18361, 27563, 31409, 39101, 55083, 82689, 94227, 117303, 128527, 192941, 273707, 385581, 578823, 821121, 1350587, 1681343, 1915949, 4051761, 5044029, 5747847, 11769401, 35308203, 82385807, 247157421]

約数ペア:

[(1, 247157421), (3, 82385807), (7, 35308203), (21, 11769401), (43, 5747847), (49, 5044029), (61, 4051761), (129, 1915949), (147, 1681343), (183, 1350587), (301, 821121), (427, 578823), (641, 385581), (903, 273707), (1281, 192941), (1923, 128527), (2107, 117303), (2623, 94227), (2989, 82689), (4487, 55083), (6321, 39101), (7869, 31409), (8967, 27563), (13461, 18361)]