205657040

素因数分解:

$2^4\times 5^1\times {\mathrm{2570713}}^1$

素因数の和:2570726

約数の個数: 20

約数和(自身を含む): 478152804

約数和(自身を除く): 272495764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2570713, 5141426, 10282852, 12853565, 20565704, 25707130, 41131408, 51414260, 102828520, 205657040]

約数ペア:

[(1, 205657040), (2, 102828520), (4, 51414260), (5, 41131408), (8, 25707130), (10, 20565704), (16, 12853565), (20, 10282852), (40, 5141426), (80, 2570713)]