20156475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{15809}}^1$

素因数の和:15839

約数の個数: 24

約数和(自身を含む): 35287920

約数和(自身を除く): 15131445

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 15809, 47427, 79045, 237135, 268753, 395225, 806259, 1185675, 1343765, 4031295, 6718825, 20156475]

約数ペア:

[(1, 20156475), (3, 6718825), (5, 4031295), (15, 1343765), (17, 1185675), (25, 806259), (51, 395225), (75, 268753), (85, 237135), (255, 79045), (425, 47427), (1275, 15809)]