218464640

素因数分解:

$2^7\times 5^1\times {\mathrm{353}}^1\times {\mathrm{967}}^1$

素因数の和:1339

約数の個数: 64

約数和(自身を含む): 524288160

約数和(自身を除く): 305823520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 353, 640, 706, 967, 1412, 1765, 1934, 2824, 3530, 3868, 4835, 5648, 7060, 7736, 9670, 11296, 14120, 15472, 19340, 22592, 28240, 30944, 38680, 45184, 56480, 61888, 77360, 112960, 123776, 154720, 225920, 309440, 341351, 618880, 682702, 1365404, 1706755, 2730808, 3413510, 5461616, 6827020, 10923232, 13654040, 21846464, 27308080, 43692928, 54616160, 109232320, 218464640]

約数ペア:

[(1, 218464640), (2, 109232320), (4, 54616160), (5, 43692928), (8, 27308080), (10, 21846464), (16, 13654040), (20, 10923232), (32, 6827020), (40, 5461616), (64, 3413510), (80, 2730808), (128, 1706755), (160, 1365404), (320, 682702), (353, 618880), (640, 341351), (706, 309440), (967, 225920), (1412, 154720), (1765, 123776), (1934, 112960), (2824, 77360), (3530, 61888), (3868, 56480), (4835, 45184), (5648, 38680), (7060, 30944), (7736, 28240), (9670, 22592), (11296, 19340), (14120, 15472)]