20821185

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2003}}^1$

素因数の和:2035

約数の個数: 64

約数和(自身を含む): 46172160

約数和(自身を除く): 25350975

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 99, 105, 135, 165, 189, 231, 297, 315, 385, 495, 693, 945, 1155, 1485, 2003, 2079, 3465, 6009, 10015, 10395, 14021, 18027, 22033, 30045, 42063, 54081, 66099, 70105, 90135, 110165, 126189, 154231, 198297, 210315, 270405, 330495, 378567, 462693, 594891, 630945, 771155, 991485, 1388079, 1892835, 2313465, 2974455, 4164237, 6940395, 20821185]

約数ペア:

[(1, 20821185), (3, 6940395), (5, 4164237), (7, 2974455), (9, 2313465), (11, 1892835), (15, 1388079), (21, 991485), (27, 771155), (33, 630945), (35, 594891), (45, 462693), (55, 378567), (63, 330495), (77, 270405), (99, 210315), (105, 198297), (135, 154231), (165, 126189), (189, 110165), (231, 90135), (297, 70105), (315, 66099), (385, 54081), (495, 42063), (693, 30045), (945, 22033), (1155, 18027), (1485, 14021), (2003, 10395), (2079, 10015), (3465, 6009)]