20512355888

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{389}}^1\times {\mathrm{70121}}^1$

素因数の和:70565

約数の個数: 40

約数和(自身を含む): 40693199040

約数和(自身を除く): 20180843152

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 389, 752, 778, 1556, 3112, 6224, 18283, 36566, 70121, 73132, 140242, 146264, 280484, 292528, 560968, 1121936, 3295687, 6591374, 13182748, 26365496, 27277069, 52730992, 54554138, 109108276, 218216552, 436433104, 1282022243, 2564044486, 5128088972, 10256177944, 20512355888]

約数ペア:

[(1, 20512355888), (2, 10256177944), (4, 5128088972), (8, 2564044486), (16, 1282022243), (47, 436433104), (94, 218216552), (188, 109108276), (376, 54554138), (389, 52730992), (752, 27277069), (778, 26365496), (1556, 13182748), (3112, 6591374), (6224, 3295687), (18283, 1121936), (36566, 560968), (70121, 292528), (73132, 280484), (140242, 146264)]