20408508

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{29837}}^1$

素因数の和:29866

約数の個数: 36

約数和(自身を含む): 54305160

約数和(自身を除く): 33896652

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684, 29837, 59674, 89511, 119348, 179022, 268533, 358044, 537066, 566903, 1074132, 1133806, 1700709, 2267612, 3401418, 5102127, 6802836, 10204254, 20408508]

約数ペア:

[(1, 20408508), (2, 10204254), (3, 6802836), (4, 5102127), (6, 3401418), (9, 2267612), (12, 1700709), (18, 1133806), (19, 1074132), (36, 566903), (38, 537066), (57, 358044), (76, 268533), (114, 179022), (171, 119348), (228, 89511), (342, 59674), (684, 29837)]