28778825

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1409}}^1$

素因数の和:1481

約数の個数: 24

約数和(自身を含む): 38464800

約数和(自身を除く): 9685975

約数列:

[1, 5, 19, 25, 43, 95, 215, 475, 817, 1075, 1409, 4085, 7045, 20425, 26771, 35225, 60587, 133855, 302935, 669275, 1151153, 1514675, 5755765, 28778825]

約数ペア:

[(1, 28778825), (5, 5755765), (19, 1514675), (25, 1151153), (43, 669275), (95, 302935), (215, 133855), (475, 60587), (817, 35225), (1075, 26771), (1409, 20425), (4085, 7045)]