28421025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{22291}}^1$

素因数の和:22321

約数の個数: 24

約数和(自身を含む): 49755744

約数和(自身を除く): 21334719

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 22291, 66873, 111455, 334365, 378947, 557275, 1136841, 1671825, 1894735, 5684205, 9473675, 28421025]

約数ペア:

[(1, 28421025), (3, 9473675), (5, 5684205), (15, 1894735), (17, 1671825), (25, 1136841), (51, 557275), (75, 378947), (85, 334365), (255, 111455), (425, 66873), (1275, 22291)]