20258025

素因数分解:

$3^1\times 5^2\times {\mathrm{257}}^1\times {\mathrm{1051}}^1$

素因数の和:1321

約数の個数: 24

約数和(自身を含む): 33655584

約数和(自身を除く): 13397559

約数列:

[1, 3, 5, 15, 25, 75, 257, 771, 1051, 1285, 3153, 3855, 5255, 6425, 15765, 19275, 26275, 78825, 270107, 810321, 1350535, 4051605, 6752675, 20258025]

約数ペア:

[(1, 20258025), (3, 6752675), (5, 4051605), (15, 1350535), (25, 810321), (75, 270107), (257, 78825), (771, 26275), (1051, 19275), (1285, 15765), (3153, 6425), (3855, 5255)]