20769488

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:515

約数の個数: 40

約数和(自身を含む): 41783040

約数和(自身を除く): 21013552

約数列:

[1, 2, 4, 8, 16, 47, 71, 94, 142, 188, 284, 376, 389, 568, 752, 778, 1136, 1556, 3112, 3337, 6224, 6674, 13348, 18283, 26696, 27619, 36566, 53392, 55238, 73132, 110476, 146264, 220952, 292528, 441904, 1298093, 2596186, 5192372, 10384744, 20769488]

約数ペア:

[(1, 20769488), (2, 10384744), (4, 5192372), (8, 2596186), (16, 1298093), (47, 441904), (71, 292528), (94, 220952), (142, 146264), (188, 110476), (284, 73132), (376, 55238), (389, 53392), (568, 36566), (752, 27619), (778, 26696), (1136, 18283), (1556, 13348), (3112, 6674), (3337, 6224)]