20516608

素因数分解:

$2^8\times 7^1\times {\mathrm{107}}^2$

素因数の和:237

約数の個数: 54

約数和(自身を含む): 47245016

約数和(自身を除く): 26728408

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 107, 112, 128, 214, 224, 256, 428, 448, 749, 856, 896, 1498, 1712, 1792, 2996, 3424, 5992, 6848, 11449, 11984, 13696, 22898, 23968, 27392, 45796, 47936, 80143, 91592, 95872, 160286, 183184, 191744, 320572, 366368, 641144, 732736, 1282288, 1465472, 2564576, 2930944, 5129152, 10258304, 20516608]

約数ペア:

[(1, 20516608), (2, 10258304), (4, 5129152), (7, 2930944), (8, 2564576), (14, 1465472), (16, 1282288), (28, 732736), (32, 641144), (56, 366368), (64, 320572), (107, 191744), (112, 183184), (128, 160286), (214, 95872), (224, 91592), (256, 80143), (428, 47936), (448, 45796), (749, 27392), (856, 23968), (896, 22898), (1498, 13696), (1712, 11984), (1792, 11449), (2996, 6848), (3424, 5992)]