207789988

素因数分解:

$2^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:449

約数の個数: 72

約数和(自身を含む): 442411200

約数和(自身を除く): 234621212

約数列:

[1, 2, 4, 7, 14, 28, 29, 49, 58, 98, 116, 139, 196, 203, 263, 278, 406, 526, 556, 812, 973, 1052, 1421, 1841, 1946, 2842, 3682, 3892, 4031, 5684, 6811, 7364, 7627, 8062, 12887, 13622, 15254, 16124, 25774, 27244, 28217, 30508, 36557, 51548, 53389, 56434, 73114, 106778, 112868, 146228, 197519, 213556, 255899, 373723, 395038, 511798, 747446, 790076, 1023596, 1060153, 1494892, 1791293, 2120306, 3582586, 4240612, 7165172, 7421071, 14842142, 29684284, 51947497, 103894994, 207789988]

約数ペア:

[(1, 207789988), (2, 103894994), (4, 51947497), (7, 29684284), (14, 14842142), (28, 7421071), (29, 7165172), (49, 4240612), (58, 3582586), (98, 2120306), (116, 1791293), (139, 1494892), (196, 1060153), (203, 1023596), (263, 790076), (278, 747446), (406, 511798), (526, 395038), (556, 373723), (812, 255899), (973, 213556), (1052, 197519), (1421, 146228), (1841, 112868), (1946, 106778), (2842, 73114), (3682, 56434), (3892, 53389), (4031, 51548), (5684, 36557), (6811, 30508), (7364, 28217), (7627, 27244), (8062, 25774), (12887, 16124), (13622, 15254)]