20157956

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{701}}^1$

素因数の和:804

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 23871484

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 79, 91, 158, 182, 316, 364, 553, 701, 1027, 1106, 1402, 2054, 2212, 2804, 4108, 4907, 7189, 9113, 9814, 14378, 18226, 19628, 28756, 36452, 55379, 63791, 110758, 127582, 221516, 255164, 387653, 719927, 775306, 1439854, 1550612, 2879708, 5039489, 10078978, 20157956]

約数ペア:

[(1, 20157956), (2, 10078978), (4, 5039489), (7, 2879708), (13, 1550612), (14, 1439854), (26, 775306), (28, 719927), (52, 387653), (79, 255164), (91, 221516), (158, 127582), (182, 110758), (316, 63791), (364, 55379), (553, 36452), (701, 28756), (1027, 19628), (1106, 18226), (1402, 14378), (2054, 9814), (2212, 9113), (2804, 7189), (4108, 4907)]