20790712

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{313}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 43068240

約数和(自身を除く): 22277528

約数列:

[1, 2, 4, 8, 19, 23, 38, 46, 76, 92, 152, 184, 313, 361, 437, 626, 722, 874, 1252, 1444, 1748, 2504, 2888, 3496, 5947, 7199, 8303, 11894, 14398, 16606, 23788, 28796, 33212, 47576, 57592, 66424, 112993, 136781, 225986, 273562, 451972, 547124, 903944, 1094248, 2598839, 5197678, 10395356, 20790712]

約数ペア:

[(1, 20790712), (2, 10395356), (4, 5197678), (8, 2598839), (19, 1094248), (23, 903944), (38, 547124), (46, 451972), (76, 273562), (92, 225986), (152, 136781), (184, 112993), (313, 66424), (361, 57592), (437, 47576), (626, 33212), (722, 28796), (874, 23788), (1252, 16606), (1444, 14398), (1748, 11894), (2504, 8303), (2888, 7199), (3496, 5947)]