20900313

素因数分解:

$3^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{571}}^1$

素因数の和:674

約数の個数: 36

約数和(自身を含む): 35603568

約数和(自身を除く): 14703255

約数列:

[1, 3, 7, 9, 21, 49, 63, 83, 147, 249, 441, 571, 581, 747, 1713, 1743, 3997, 4067, 5139, 5229, 11991, 12201, 27979, 35973, 36603, 47393, 83937, 142179, 251811, 331751, 426537, 995253, 2322257, 2985759, 6966771, 20900313]

約数ペア:

[(1, 20900313), (3, 6966771), (7, 2985759), (9, 2322257), (21, 995253), (49, 426537), (63, 331751), (83, 251811), (147, 142179), (249, 83937), (441, 47393), (571, 36603), (581, 35973), (747, 27979), (1713, 12201), (1743, 11991), (3997, 5229), (4067, 5139)]