20879890

素因数分解:

$2^1\times 5^1\times {\mathrm{1439}}^1\times {\mathrm{1451}}^1$

素因数の和:2897

約数の個数: 16

約数和(自身を含む): 37635840

約数和(自身を除く): 16755950

約数列:

[1, 2, 5, 10, 1439, 1451, 2878, 2902, 7195, 7255, 14390, 14510, 2087989, 4175978, 10439945, 20879890]

約数ペア:

[(1, 20879890), (2, 10439945), (5, 4175978), (10, 2087989), (1439, 14510), (1451, 14390), (2878, 7255), (2902, 7195)]