19139744

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{331}}^1$

素因数の和:493

約数の個数: 48

約数和(自身を含む): 40995360

約数和(自身を除く): 21855616

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 139, 208, 278, 331, 416, 556, 662, 1112, 1324, 1807, 2224, 2648, 3614, 4303, 4448, 5296, 7228, 8606, 10592, 14456, 17212, 28912, 34424, 46009, 57824, 68848, 92018, 137696, 184036, 368072, 598117, 736144, 1196234, 1472288, 2392468, 4784936, 9569872, 19139744]

約数ペア:

[(1, 19139744), (2, 9569872), (4, 4784936), (8, 2392468), (13, 1472288), (16, 1196234), (26, 736144), (32, 598117), (52, 368072), (104, 184036), (139, 137696), (208, 92018), (278, 68848), (331, 57824), (416, 46009), (556, 34424), (662, 28912), (1112, 17212), (1324, 14456), (1807, 10592), (2224, 8606), (2648, 7228), (3614, 5296), (4303, 4448)]