19513480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{69691}}^1$

素因数の和:69709

約数の個数: 32

約数和(自身を含む): 50178240

約数和(自身を除く): 30664760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 69691, 139382, 278764, 348455, 487837, 557528, 696910, 975674, 1393820, 1951348, 2439185, 2787640, 3902696, 4878370, 9756740, 19513480]

約数ペア:

[(1, 19513480), (2, 9756740), (4, 4878370), (5, 3902696), (7, 2787640), (8, 2439185), (10, 1951348), (14, 1393820), (20, 975674), (28, 696910), (35, 557528), (40, 487837), (56, 348455), (70, 278764), (140, 139382), (280, 69691)]