20186775

素因数分解:

$3^2\times 5^2\times 7^2\times {\mathrm{1831}}^1$

素因数の和:1861

約数の個数: 54

約数和(自身を含む): 42082872

約数和(自身を除く): 21896097

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 49, 63, 75, 105, 147, 175, 225, 245, 315, 441, 525, 735, 1225, 1575, 1831, 2205, 3675, 5493, 9155, 11025, 12817, 16479, 27465, 38451, 45775, 64085, 82395, 89719, 115353, 137325, 192255, 269157, 320425, 411975, 448595, 576765, 807471, 961275, 1345785, 2242975, 2883825, 4037355, 6728925, 20186775]

約数ペア:

[(1, 20186775), (3, 6728925), (5, 4037355), (7, 2883825), (9, 2242975), (15, 1345785), (21, 961275), (25, 807471), (35, 576765), (45, 448595), (49, 411975), (63, 320425), (75, 269157), (105, 192255), (147, 137325), (175, 115353), (225, 89719), (245, 82395), (315, 64085), (441, 45775), (525, 38451), (735, 27465), (1225, 16479), (1575, 12817), (1831, 11025), (2205, 9155), (3675, 5493)]