100405040

素因数分解:

$2^4\times 5^1\times {\mathrm{1255063}}^1$

素因数の和:1255076

約数の個数: 20

約数和(自身を含む): 233441904

約数和(自身を除く): 133036864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1255063, 2510126, 5020252, 6275315, 10040504, 12550630, 20081008, 25101260, 50202520, 100405040]

約数ペア:

[(1, 100405040), (2, 50202520), (4, 25101260), (5, 20081008), (8, 12550630), (10, 10040504), (16, 6275315), (20, 5020252), (40, 2510126), (80, 1255063)]