319400680

素因数分解:

$2^3\times 5^1\times {\mathrm{7985017}}^1$

素因数の和:7985028

約数の個数: 16

約数和(自身を含む): 718651620

約数和(自身を除く): 399250940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7985017, 15970034, 31940068, 39925085, 63880136, 79850170, 159700340, 319400680]

約数ペア:

[(1, 319400680), (2, 159700340), (4, 79850170), (5, 63880136), (8, 39925085), (10, 31940068), (20, 15970034), (40, 7985017)]