28121025

素因数分解:

$3^1\times 5^2\times {\mathrm{211}}^1\times {\mathrm{1777}}^1$

素因数の和:2001

約数の個数: 24

約数和(自身を含む): 46740064

約数和(自身を除く): 18619039

約数列:

[1, 3, 5, 15, 25, 75, 211, 633, 1055, 1777, 3165, 5275, 5331, 8885, 15825, 26655, 44425, 133275, 374947, 1124841, 1874735, 5624205, 9373675, 28121025]

約数ペア:

[(1, 28121025), (3, 9373675), (5, 5624205), (15, 1874735), (25, 1124841), (75, 374947), (211, 133275), (633, 44425), (1055, 26655), (1777, 15825), (3165, 8885), (5275, 5331)]