28001180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15731}}^1$

素因数の和:15829

約数の個数: 24

約数和(自身を含む): 59466960

約数和(自身を除く): 31465780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 15731, 31462, 62924, 78655, 157310, 314620, 1400059, 2800118, 5600236, 7000295, 14000590, 28001180]

約数ペア:

[(1, 28001180), (2, 14000590), (4, 7000295), (5, 5600236), (10, 2800118), (20, 1400059), (89, 314620), (178, 157310), (356, 78655), (445, 62924), (890, 31462), (1780, 15731)]