21047680

素因数分解:

$2^7\times 5^1\times {\mathrm{32887}}^1$

素因数の和:32906

約数の個数: 32

約数和(自身を含む): 50318640

約数和(自身を除く): 29270960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32887, 65774, 131548, 164435, 263096, 328870, 526192, 657740, 1052384, 1315480, 2104768, 2630960, 4209536, 5261920, 10523840, 21047680]

約数ペア:

[(1, 21047680), (2, 10523840), (4, 5261920), (5, 4209536), (8, 2630960), (10, 2104768), (16, 1315480), (20, 1052384), (32, 657740), (40, 526192), (64, 328870), (80, 263096), (128, 164435), (160, 131548), (320, 65774), (640, 32887)]