21075128

素因数分解:

$2^3\times {\mathrm{271}}^1\times {\mathrm{9721}}^1$

素因数の和:9998

約数の個数: 16

約数和(自身を含む): 39665760

約数和(自身を除く): 18590632

約数列:

[1, 2, 4, 8, 271, 542, 1084, 2168, 9721, 19442, 38884, 77768, 2634391, 5268782, 10537564, 21075128]

約数ペア:

[(1, 21075128), (2, 10537564), (4, 5268782), (8, 2634391), (271, 77768), (542, 38884), (1084, 19442), (2168, 9721)]