20491264

素因数分解:

$2^{10}\times {\mathrm{20011}}^1$

素因数の和:20031

約数の個数: 22

約数和(自身を含む): 40964564

約数和(自身を除く): 20473300

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 20011, 40022, 80044, 160088, 320176, 640352, 1280704, 2561408, 5122816, 10245632, 20491264]

約数ペア:

[(1, 20491264), (2, 10245632), (4, 5122816), (8, 2561408), (16, 1280704), (32, 640352), (64, 320176), (128, 160088), (256, 80044), (512, 40022), (1024, 20011)]