20986659

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 34145280

約数和(自身を除く): 13158621

約数列:

[1, 3, 9, 19, 31, 37, 57, 93, 107, 111, 171, 279, 321, 333, 589, 703, 963, 1147, 1767, 2033, 2109, 3317, 3441, 3959, 5301, 6099, 6327, 9951, 10323, 11877, 18297, 21793, 29853, 35631, 63023, 65379, 75221, 122729, 189069, 196137, 225663, 368187, 567207, 676989, 1104561, 2331851, 6995553, 20986659]

約数ペア:

[(1, 20986659), (3, 6995553), (9, 2331851), (19, 1104561), (31, 676989), (37, 567207), (57, 368187), (93, 225663), (107, 196137), (111, 189069), (171, 122729), (279, 75221), (321, 65379), (333, 63023), (589, 35631), (703, 29853), (963, 21793), (1147, 18297), (1767, 11877), (2033, 10323), (2109, 9951), (3317, 6327), (3441, 6099), (3959, 5301)]