28710025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1571}}^1$

素因数の和:1641

約数の個数: 24

約数和(自身を含む): 38595744

約数和(自身を除く): 9885719

約数列:

[1, 5, 17, 25, 43, 85, 215, 425, 731, 1075, 1571, 3655, 7855, 18275, 26707, 39275, 67553, 133535, 337765, 667675, 1148401, 1688825, 5742005, 28710025]

約数ペア:

[(1, 28710025), (5, 5742005), (17, 1688825), (25, 1148401), (43, 667675), (85, 337765), (215, 133535), (425, 67553), (731, 39275), (1075, 26707), (1571, 18275), (3655, 7855)]