1261897040

素因数分解:

$2^4\times 5^1\times {\mathrm{15773713}}^1$

素因数の和:15773726

約数の個数: 20

約数和(自身を含む): 2933910804

約数和(自身を除く): 1672013764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15773713, 31547426, 63094852, 78868565, 126189704, 157737130, 252379408, 315474260, 630948520, 1261897040]

約数ペア:

[(1, 1261897040), (2, 630948520), (4, 315474260), (5, 252379408), (8, 157737130), (10, 126189704), (16, 78868565), (20, 63094852), (40, 31547426), (80, 15773713)]