20820712

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 43498980

約数和(自身を除く): 22678268

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 137, 157, 242, 274, 314, 484, 548, 628, 968, 1096, 1256, 1507, 1727, 3014, 3454, 6028, 6908, 12056, 13816, 16577, 18997, 21509, 33154, 37994, 43018, 66308, 75988, 86036, 132616, 151976, 172072, 236599, 473198, 946396, 1892792, 2602589, 5205178, 10410356, 20820712]

約数ペア:

[(1, 20820712), (2, 10410356), (4, 5205178), (8, 2602589), (11, 1892792), (22, 946396), (44, 473198), (88, 236599), (121, 172072), (137, 151976), (157, 132616), (242, 86036), (274, 75988), (314, 66308), (484, 43018), (548, 37994), (628, 33154), (968, 21509), (1096, 18997), (1256, 16577), (1507, 13816), (1727, 12056), (3014, 6908), (3454, 6028)]