81920

素因数分解:

$2^{14}\times 5^1$

素因数の和:33

約数の個数: 30

約数和(自身を含む): 196602

約数和(自身を除く): 114682

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 4096, 5120, 8192, 10240, 16384, 20480, 40960, 81920]

約数ペア:

[(1, 81920), (2, 40960), (4, 20480), (5, 16384), (8, 10240), (10, 8192), (16, 5120), (20, 4096), (32, 2560), (40, 2048), (64, 1280), (80, 1024), (128, 640), (160, 512), (256, 320)]