20425216

素因数分解:

$2^9\times 7^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:205

約数の個数: 80

約数和(自身を含む): 48121920

約数和(自身を除く): 27696704

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 56, 64, 82, 112, 128, 139, 164, 224, 256, 278, 287, 328, 448, 512, 556, 574, 656, 896, 973, 1112, 1148, 1312, 1792, 1946, 2224, 2296, 2624, 3584, 3892, 4448, 4592, 5248, 5699, 7784, 8896, 9184, 10496, 11398, 15568, 17792, 18368, 20992, 22796, 31136, 35584, 36736, 39893, 45592, 62272, 71168, 73472, 79786, 91184, 124544, 146944, 159572, 182368, 249088, 319144, 364736, 498176, 638288, 729472, 1276576, 1458944, 2553152, 2917888, 5106304, 10212608, 20425216]

約数ペア:

[(1, 20425216), (2, 10212608), (4, 5106304), (7, 2917888), (8, 2553152), (14, 1458944), (16, 1276576), (28, 729472), (32, 638288), (41, 498176), (56, 364736), (64, 319144), (82, 249088), (112, 182368), (128, 159572), (139, 146944), (164, 124544), (224, 91184), (256, 79786), (278, 73472), (287, 71168), (328, 62272), (448, 45592), (512, 39893), (556, 36736), (574, 35584), (656, 31136), (896, 22796), (973, 20992), (1112, 18368), (1148, 17792), (1312, 15568), (1792, 11398), (1946, 10496), (2224, 9184), (2296, 8896), (2624, 7784), (3584, 5699), (3892, 5248), (4448, 4592)]