19996160

素因数分解:

$2^9\times 5^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:203

約数の個数: 80

約数和(自身を含む): 49054896

約数和(自身を除く): 29058736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 107, 128, 146, 160, 214, 256, 292, 320, 365, 428, 512, 535, 584, 640, 730, 856, 1070, 1168, 1280, 1460, 1712, 2140, 2336, 2560, 2920, 3424, 4280, 4672, 5840, 6848, 7811, 8560, 9344, 11680, 13696, 15622, 17120, 18688, 23360, 27392, 31244, 34240, 37376, 39055, 46720, 54784, 62488, 68480, 78110, 93440, 124976, 136960, 156220, 186880, 249952, 273920, 312440, 499904, 624880, 999808, 1249760, 1999616, 2499520, 3999232, 4999040, 9998080, 19996160]

約数ペア:

[(1, 19996160), (2, 9998080), (4, 4999040), (5, 3999232), (8, 2499520), (10, 1999616), (16, 1249760), (20, 999808), (32, 624880), (40, 499904), (64, 312440), (73, 273920), (80, 249952), (107, 186880), (128, 156220), (146, 136960), (160, 124976), (214, 93440), (256, 78110), (292, 68480), (320, 62488), (365, 54784), (428, 46720), (512, 39055), (535, 37376), (584, 34240), (640, 31244), (730, 27392), (856, 23360), (1070, 18688), (1168, 17120), (1280, 15622), (1460, 13696), (1712, 11680), (2140, 9344), (2336, 8560), (2560, 7811), (2920, 6848), (3424, 5840), (4280, 4672)]