21063808

素因数分解:

$2^7\times {\mathrm{43}}^2\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 48

約数和(自身を含む): 43444350

約数和(自身を除く): 22380542

約数列:

[1, 2, 4, 8, 16, 32, 43, 64, 86, 89, 128, 172, 178, 344, 356, 688, 712, 1376, 1424, 1849, 2752, 2848, 3698, 3827, 5504, 5696, 7396, 7654, 11392, 14792, 15308, 29584, 30616, 59168, 61232, 118336, 122464, 164561, 236672, 244928, 329122, 489856, 658244, 1316488, 2632976, 5265952, 10531904, 21063808]

約数ペア:

[(1, 21063808), (2, 10531904), (4, 5265952), (8, 2632976), (16, 1316488), (32, 658244), (43, 489856), (64, 329122), (86, 244928), (89, 236672), (128, 164561), (172, 122464), (178, 118336), (344, 61232), (356, 59168), (688, 30616), (712, 29584), (1376, 15308), (1424, 14792), (1849, 11392), (2752, 7654), (2848, 7396), (3698, 5696), (3827, 5504)]