31989680

素因数分解:

$2^4\times 5^1\times {\mathrm{399871}}^1$

素因数の和:399884

約数の個数: 20

約数和(自身を含む): 74376192

約数和(自身を除く): 42386512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 399871, 799742, 1599484, 1999355, 3198968, 3998710, 6397936, 7997420, 15994840, 31989680]

約数ペア:

[(1, 31989680), (2, 15994840), (4, 7997420), (5, 6397936), (8, 3998710), (10, 3198968), (16, 1999355), (20, 1599484), (40, 799742), (80, 399871)]