21008702008

素因数分解:

$2^3\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1494643}}^1$

素因数の和:1494907

約数の個数: 32

約数和(自身を含む): 45198034560

約数和(自身を除く): 24189332552

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 251, 502, 1004, 1757, 2008, 3514, 7028, 14056, 1494643, 2989286, 5978572, 10462501, 11957144, 20925002, 41850004, 83700008, 375155393, 750310786, 1500621572, 2626087751, 3001243144, 5252175502, 10504351004, 21008702008]

約数ペア:

[(1, 21008702008), (2, 10504351004), (4, 5252175502), (7, 3001243144), (8, 2626087751), (14, 1500621572), (28, 750310786), (56, 375155393), (251, 83700008), (502, 41850004), (1004, 20925002), (1757, 11957144), (2008, 10462501), (3514, 5978572), (7028, 2989286), (14056, 1494643)]