20406784

素因数分解:

$2^9\times {\mathrm{39857}}^1$

素因数の和:39875

約数の個数: 20

約数和(自身を含む): 40774734

約数和(自身を除く): 20367950

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 39857, 79714, 159428, 318856, 637712, 1275424, 2550848, 5101696, 10203392, 20406784]

約数ペア:

[(1, 20406784), (2, 10203392), (4, 5101696), (8, 2550848), (16, 1275424), (32, 637712), (64, 318856), (128, 159428), (256, 79714), (512, 39857)]