79994840

素因数分解:

$2^3\times 5^1\times {\mathrm{1999871}}^1$

素因数の和:1999882

約数の個数: 16

約数和(自身を含む): 179988480

約数和(自身を除く): 99993640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1999871, 3999742, 7999484, 9999355, 15998968, 19998710, 39997420, 79994840]

約数ペア:

[(1, 79994840), (2, 39997420), (4, 19998710), (5, 15998968), (8, 9999355), (10, 7999484), (20, 3999742), (40, 1999871)]