20473480

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1051}}^1$

素因数の和:1549

約数の個数: 32

約数和(自身を含む): 46203840

約数和(自身を除く): 25730360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1051, 1948, 2102, 2435, 3896, 4204, 4870, 5255, 8408, 9740, 10510, 19480, 21020, 42040, 511837, 1023674, 2047348, 2559185, 4094696, 5118370, 10236740, 20473480]

約数ペア:

[(1, 20473480), (2, 10236740), (4, 5118370), (5, 4094696), (8, 2559185), (10, 2047348), (20, 1023674), (40, 511837), (487, 42040), (974, 21020), (1051, 19480), (1948, 10510), (2102, 9740), (2435, 8408), (3896, 5255), (4204, 4870)]