20671568

素因数分解:

$2^4\times {\mathrm{809}}^1\times {\mathrm{1597}}^1$

素因数の和:2414

約数の個数: 20

約数和(自身を含む): 40125780

約数和(自身を除く): 19454212

約数列:

[1, 2, 4, 8, 16, 809, 1597, 1618, 3194, 3236, 6388, 6472, 12776, 12944, 25552, 1291973, 2583946, 5167892, 10335784, 20671568]

約数ペア:

[(1, 20671568), (2, 10335784), (4, 5167892), (8, 2583946), (16, 1291973), (809, 25552), (1597, 12944), (1618, 12776), (3194, 6472), (3236, 6388)]