21057795

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2239}}^1$

素因数の和:2280

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 20875005

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2239, 3135, 6717, 9405, 11195, 20151, 24629, 33585, 42541, 73887, 100755, 123145, 127623, 212705, 221661, 369435, 382869, 467951, 638115, 1108305, 1403853, 1914345, 2339755, 4211559, 7019265, 21057795]

約数ペア:

[(1, 21057795), (3, 7019265), (5, 4211559), (9, 2339755), (11, 1914345), (15, 1403853), (19, 1108305), (33, 638115), (45, 467951), (55, 382869), (57, 369435), (95, 221661), (99, 212705), (165, 127623), (171, 123145), (209, 100755), (285, 73887), (495, 42541), (627, 33585), (855, 24629), (1045, 20151), (1881, 11195), (2239, 9405), (3135, 6717)]