19787355

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{20939}}^1$

素因数の和:20960

約数の個数: 32

約数和(自身を含む): 40204800

約数和(自身を除く): 20417445

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 20939, 62817, 104695, 146573, 188451, 314085, 439719, 565353, 732865, 942255, 1319157, 2198595, 2826765, 3957471, 6595785, 19787355]

約数ペア:

[(1, 19787355), (3, 6595785), (5, 3957471), (7, 2826765), (9, 2198595), (15, 1319157), (21, 942255), (27, 732865), (35, 565353), (45, 439719), (63, 314085), (105, 188451), (135, 146573), (189, 104695), (315, 62817), (945, 20939)]