20735464

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{643}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 40572000

約数和(自身を除く): 19836536

約数列:

[1, 2, 4, 8, 29, 58, 116, 139, 232, 278, 556, 643, 1112, 1286, 2572, 4031, 5144, 8062, 16124, 18647, 32248, 37294, 74588, 89377, 149176, 178754, 357508, 715016, 2591933, 5183866, 10367732, 20735464]

約数ペア:

[(1, 20735464), (2, 10367732), (4, 5183866), (8, 2591933), (29, 715016), (58, 357508), (116, 178754), (139, 149176), (232, 89377), (278, 74588), (556, 37294), (643, 32248), (1112, 18647), (1286, 16124), (2572, 8062), (4031, 5144)]