20885440

素因数分解:

$2^6\times 5^1\times {\mathrm{65267}}^1$

素因数の和:65284

約数の個数: 28

約数和(自身を含む): 49734216

約数和(自身を除く): 28848776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65267, 130534, 261068, 326335, 522136, 652670, 1044272, 1305340, 2088544, 2610680, 4177088, 5221360, 10442720, 20885440]

約数ペア:

[(1, 20885440), (2, 10442720), (4, 5221360), (5, 4177088), (8, 2610680), (10, 2088544), (16, 1305340), (20, 1044272), (32, 652670), (40, 522136), (64, 326335), (80, 261068), (160, 130534), (320, 65267)]