20628992

素因数分解:

$2^9\times {\mathrm{43}}^1\times {\mathrm{937}}^1$

素因数の和:998

約数の個数: 40

約数和(自身を含む): 42221256

約数和(自身を除く): 21592264

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 128, 172, 256, 344, 512, 688, 937, 1376, 1874, 2752, 3748, 5504, 7496, 11008, 14992, 22016, 29984, 40291, 59968, 80582, 119936, 161164, 239872, 322328, 479744, 644656, 1289312, 2578624, 5157248, 10314496, 20628992]

約数ペア:

[(1, 20628992), (2, 10314496), (4, 5157248), (8, 2578624), (16, 1289312), (32, 644656), (43, 479744), (64, 322328), (86, 239872), (128, 161164), (172, 119936), (256, 80582), (344, 59968), (512, 40291), (688, 29984), (937, 22016), (1376, 14992), (1874, 11008), (2752, 7496), (3748, 5504)]