21471744

素因数分解:

$2^9\times 3^1\times 7^1\times {\mathrm{1997}}^1$

素因数の和:2025

約数の個数: 80

約数和(自身を含む): 65406528

約数和(自身を除く): 43934784

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 64, 84, 96, 112, 128, 168, 192, 224, 256, 336, 384, 448, 512, 672, 768, 896, 1344, 1536, 1792, 1997, 2688, 3584, 3994, 5376, 5991, 7988, 10752, 11982, 13979, 15976, 23964, 27958, 31952, 41937, 47928, 55916, 63904, 83874, 95856, 111832, 127808, 167748, 191712, 223664, 255616, 335496, 383424, 447328, 511232, 670992, 766848, 894656, 1022464, 1341984, 1533696, 1789312, 2683968, 3067392, 3578624, 5367936, 7157248, 10735872, 21471744]

約数ペア:

[(1, 21471744), (2, 10735872), (3, 7157248), (4, 5367936), (6, 3578624), (7, 3067392), (8, 2683968), (12, 1789312), (14, 1533696), (16, 1341984), (21, 1022464), (24, 894656), (28, 766848), (32, 670992), (42, 511232), (48, 447328), (56, 383424), (64, 335496), (84, 255616), (96, 223664), (112, 191712), (128, 167748), (168, 127808), (192, 111832), (224, 95856), (256, 83874), (336, 63904), (384, 55916), (448, 47928), (512, 41937), (672, 31952), (768, 27958), (896, 23964), (1344, 15976), (1536, 13979), (1792, 11982), (1997, 10752), (2688, 7988), (3584, 5991), (3994, 5376)]