388405040

素因数分解:

$2^4\times 5^1\times {\mathrm{4855063}}^1$

素因数の和:4855076

約数の個数: 20

約数和(自身を含む): 903041904

約数和(自身を除く): 514636864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4855063, 9710126, 19420252, 24275315, 38840504, 48550630, 77681008, 97101260, 194202520, 388405040]

約数ペア:

[(1, 388405040), (2, 194202520), (4, 97101260), (5, 77681008), (8, 48550630), (10, 38840504), (16, 24275315), (20, 19420252), (40, 9710126), (80, 4855063)]