20815508

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{23981}}^1$

素因数の和:24023

約数の個数: 24

約数和(自身を含む): 42975744

約数和(自身を除く): 22160236

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 23981, 47962, 95924, 167867, 335734, 671468, 743411, 1486822, 2973644, 5203877, 10407754, 20815508]

約数ペア:

[(1, 20815508), (2, 10407754), (4, 5203877), (7, 2973644), (14, 1486822), (28, 743411), (31, 671468), (62, 335734), (124, 167867), (217, 95924), (434, 47962), (868, 23981)]