20743136

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:451

約数の個数: 48

約数和(自身を含む): 43520400

約数和(自身を除く): 22777264

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 109, 152, 218, 304, 313, 436, 608, 626, 872, 1252, 1744, 2071, 2504, 3488, 4142, 5008, 5947, 8284, 10016, 11894, 16568, 23788, 33136, 34117, 47576, 66272, 68234, 95152, 136468, 190304, 272936, 545872, 648223, 1091744, 1296446, 2592892, 5185784, 10371568, 20743136]

約数ペア:

[(1, 20743136), (2, 10371568), (4, 5185784), (8, 2592892), (16, 1296446), (19, 1091744), (32, 648223), (38, 545872), (76, 272936), (109, 190304), (152, 136468), (218, 95152), (304, 68234), (313, 66272), (436, 47576), (608, 34117), (626, 33136), (872, 23788), (1252, 16568), (1744, 11894), (2071, 10016), (2504, 8284), (3488, 5947), (4142, 5008)]