20800794

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{509}}^1$

素因数の和:667

約数の個数: 48

約数和(自身を含む): 48837600

約数和(自身を除く): 28036806

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 139, 147, 278, 294, 417, 509, 834, 973, 1018, 1527, 1946, 2919, 3054, 3563, 5838, 6811, 7126, 10689, 13622, 20433, 21378, 24941, 40866, 49882, 70751, 74823, 141502, 149646, 212253, 424506, 495257, 990514, 1485771, 2971542, 3466799, 6933598, 10400397, 20800794]

約数ペア:

[(1, 20800794), (2, 10400397), (3, 6933598), (6, 3466799), (7, 2971542), (14, 1485771), (21, 990514), (42, 495257), (49, 424506), (98, 212253), (139, 149646), (147, 141502), (278, 74823), (294, 70751), (417, 49882), (509, 40866), (834, 24941), (973, 21378), (1018, 20433), (1527, 13622), (1946, 10689), (2919, 7126), (3054, 6811), (3563, 5838)]