20938540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149561}}^1$

素因数の和:149577

約数の個数: 24

約数和(自身を含む): 50252832

約数和(自身を除く): 29314292

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149561, 299122, 598244, 747805, 1046927, 1495610, 2093854, 2991220, 4187708, 5234635, 10469270, 20938540]

約数ペア:

[(1, 20938540), (2, 10469270), (4, 5234635), (5, 4187708), (7, 2991220), (10, 2093854), (14, 1495610), (20, 1046927), (28, 747805), (35, 598244), (70, 299122), (140, 149561)]