131616880

素因数分解:

$2^4\times 5^1\times {\mathrm{1645211}}^1$

素因数の和:1645224

約数の個数: 20

約数和(自身を含む): 306009432

約数和(自身を除く): 174392552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1645211, 3290422, 6580844, 8226055, 13161688, 16452110, 26323376, 32904220, 65808440, 131616880]

約数ペア:

[(1, 131616880), (2, 65808440), (4, 32904220), (5, 26323376), (8, 16452110), (10, 13161688), (16, 8226055), (20, 6580844), (40, 3290422), (80, 1645211)]