81571408

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{1777}}^1$

素因数の和:1955

約数の個数: 40

約数和(自身を含む): 167558720

約数和(自身を除く): 85987312

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 151, 152, 302, 304, 604, 1208, 1777, 2416, 2869, 3554, 5738, 7108, 11476, 14216, 22952, 28432, 33763, 45904, 67526, 135052, 268327, 270104, 536654, 540208, 1073308, 2146616, 4293232, 5098213, 10196426, 20392852, 40785704, 81571408]

約数ペア:

[(1, 81571408), (2, 40785704), (4, 20392852), (8, 10196426), (16, 5098213), (19, 4293232), (38, 2146616), (76, 1073308), (151, 540208), (152, 536654), (302, 270104), (304, 268327), (604, 135052), (1208, 67526), (1777, 45904), (2416, 33763), (2869, 28432), (3554, 22952), (5738, 14216), (7108, 11476)]