20304987

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 30108672

約数和(自身を除く): 9803685

約数列:

[1, 3, 17, 43, 47, 51, 129, 141, 197, 591, 731, 799, 2021, 2193, 2397, 3349, 6063, 8471, 9259, 10047, 25413, 27777, 34357, 103071, 144007, 157403, 398137, 432021, 472209, 1194411, 6768329, 20304987]

約数ペア:

[(1, 20304987), (3, 6768329), (17, 1194411), (43, 472209), (47, 432021), (51, 398137), (129, 157403), (141, 144007), (197, 103071), (591, 34357), (731, 27777), (799, 25413), (2021, 10047), (2193, 9259), (2397, 8471), (3349, 6063)]