13563920

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3943}}^1$

素因数の和:3999

約数の個数: 40

約数和(自身を含む): 32277696

約数和(自身を除く): 18713776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 3943, 7886, 15772, 19715, 31544, 39430, 63088, 78860, 157720, 169549, 315440, 339098, 678196, 847745, 1356392, 1695490, 2712784, 3390980, 6781960, 13563920]

約数ペア:

[(1, 13563920), (2, 6781960), (4, 3390980), (5, 2712784), (8, 1695490), (10, 1356392), (16, 847745), (20, 678196), (40, 339098), (43, 315440), (80, 169549), (86, 157720), (172, 78860), (215, 63088), (344, 39430), (430, 31544), (688, 19715), (860, 15772), (1720, 7886), (3440, 3943)]