21210784

素因数分解:

$2^5\times 7^1\times {\mathrm{23}}^2\times {\mathrm{179}}^1$

素因数の和:242

約数の個数: 72

約数和(自身を含む): 50168160

約数和(自身を除く): 28957376

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 92, 112, 161, 179, 184, 224, 322, 358, 368, 529, 644, 716, 736, 1058, 1253, 1288, 1432, 2116, 2506, 2576, 2864, 3703, 4117, 4232, 5012, 5152, 5728, 7406, 8234, 8464, 10024, 14812, 16468, 16928, 20048, 28819, 29624, 32936, 40096, 57638, 59248, 65872, 94691, 115276, 118496, 131744, 189382, 230552, 378764, 461104, 662837, 757528, 922208, 1325674, 1515056, 2651348, 3030112, 5302696, 10605392, 21210784]

約数ペア:

[(1, 21210784), (2, 10605392), (4, 5302696), (7, 3030112), (8, 2651348), (14, 1515056), (16, 1325674), (23, 922208), (28, 757528), (32, 662837), (46, 461104), (56, 378764), (92, 230552), (112, 189382), (161, 131744), (179, 118496), (184, 115276), (224, 94691), (322, 65872), (358, 59248), (368, 57638), (529, 40096), (644, 32936), (716, 29624), (736, 28819), (1058, 20048), (1253, 16928), (1288, 16468), (1432, 14812), (2116, 10024), (2506, 8464), (2576, 8234), (2864, 7406), (3703, 5728), (4117, 5152), (4232, 5012)]