19873280

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{1109}}^1$

素因数の和:1139

約数の個数: 80

約数和(自身を含む): 54505440

約数和(自身を除く): 34632160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 896, 1109, 1120, 1280, 1792, 2218, 2240, 2560, 3584, 4436, 4480, 5545, 7763, 8872, 8960, 11090, 15526, 17744, 17920, 22180, 31052, 35488, 38815, 44360, 62104, 70976, 77630, 88720, 124208, 141952, 155260, 177440, 248416, 283904, 310520, 354880, 496832, 567808, 621040, 709760, 993664, 1242080, 1419520, 1987328, 2484160, 2839040, 3974656, 4968320, 9936640, 19873280]

約数ペア:

[(1, 19873280), (2, 9936640), (4, 4968320), (5, 3974656), (7, 2839040), (8, 2484160), (10, 1987328), (14, 1419520), (16, 1242080), (20, 993664), (28, 709760), (32, 621040), (35, 567808), (40, 496832), (56, 354880), (64, 310520), (70, 283904), (80, 248416), (112, 177440), (128, 155260), (140, 141952), (160, 124208), (224, 88720), (256, 77630), (280, 70976), (320, 62104), (448, 44360), (512, 38815), (560, 35488), (640, 31052), (896, 22180), (1109, 17920), (1120, 17744), (1280, 15526), (1792, 11090), (2218, 8960), (2240, 8872), (2560, 7763), (3584, 5545), (4436, 4480)]