20673555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{491}}^1$

素因数の和:907

約数の個数: 32

約数和(自身を含む): 37974528

約数和(自身を除く): 17300973

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 401, 491, 1203, 1473, 2005, 2455, 2807, 3437, 6015, 7365, 8421, 10311, 14035, 17185, 42105, 51555, 196891, 590673, 984455, 1378237, 2953365, 4134711, 6891185, 20673555]

約数ペア:

[(1, 20673555), (3, 6891185), (5, 4134711), (7, 2953365), (15, 1378237), (21, 984455), (35, 590673), (105, 196891), (401, 51555), (491, 42105), (1203, 17185), (1473, 14035), (2005, 10311), (2455, 8421), (2807, 7365), (3437, 6015)]