19043840

素因数分解:

$2^9\times 5^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:239

約数の個数: 80

約数和(自身を含む): 46992528

約数和(自身を除く): 27948688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 173, 215, 256, 320, 344, 346, 430, 512, 640, 688, 692, 860, 865, 1280, 1376, 1384, 1720, 1730, 2560, 2752, 2768, 3440, 3460, 5504, 5536, 6880, 6920, 7439, 11008, 11072, 13760, 13840, 14878, 22016, 22144, 27520, 27680, 29756, 37195, 44288, 55040, 55360, 59512, 74390, 88576, 110080, 110720, 119024, 148780, 221440, 238048, 297560, 442880, 476096, 595120, 952192, 1190240, 1904384, 2380480, 3808768, 4760960, 9521920, 19043840]

約数ペア:

[(1, 19043840), (2, 9521920), (4, 4760960), (5, 3808768), (8, 2380480), (10, 1904384), (16, 1190240), (20, 952192), (32, 595120), (40, 476096), (43, 442880), (64, 297560), (80, 238048), (86, 221440), (128, 148780), (160, 119024), (172, 110720), (173, 110080), (215, 88576), (256, 74390), (320, 59512), (344, 55360), (346, 55040), (430, 44288), (512, 37195), (640, 29756), (688, 27680), (692, 27520), (860, 22144), (865, 22016), (1280, 14878), (1376, 13840), (1384, 13760), (1720, 11072), (1730, 11008), (2560, 7439), (2752, 6920), (2768, 6880), (3440, 5536), (3460, 5504)]