20824120

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1069}}^1$

素因数の和:1567

約数の個数: 32

約数和(自身を含む): 46994400

約数和(自身を除く): 26170280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1069, 1948, 2138, 2435, 3896, 4276, 4870, 5345, 8552, 9740, 10690, 19480, 21380, 42760, 520603, 1041206, 2082412, 2603015, 4164824, 5206030, 10412060, 20824120]

約数ペア:

[(1, 20824120), (2, 10412060), (4, 5206030), (5, 4164824), (8, 2603015), (10, 2082412), (20, 1041206), (40, 520603), (487, 42760), (974, 21380), (1069, 19480), (1948, 10690), (2138, 9740), (2435, 8552), (3896, 5345), (4276, 4870)]