21067675

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2609}}^1$

素因数の和:2655

約数の個数: 24

約数和(自身を含む): 29127600

約数和(自身を除く): 8059925

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1615, 2609, 8075, 13045, 44353, 49571, 65225, 221765, 247855, 842707, 1108825, 1239275, 4213535, 21067675]

約数ペア:

[(1, 21067675), (5, 4213535), (17, 1239275), (19, 1108825), (25, 842707), (85, 247855), (95, 221765), (323, 65225), (425, 49571), (475, 44353), (1615, 13045), (2609, 8075)]