199388979

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{263}}^1\times {\mathrm{653}}^1$

素因数の和:968

約数の個数: 32

約数和(自身を含む): 303874560

約数和(自身を除く): 104485581

約数列:

[1, 3, 9, 27, 43, 129, 263, 387, 653, 789, 1161, 1959, 2367, 5877, 7101, 11309, 17631, 28079, 33927, 84237, 101781, 171739, 252711, 305343, 515217, 758133, 1545651, 4636953, 7384777, 22154331, 66462993, 199388979]

約数ペア:

[(1, 199388979), (3, 66462993), (9, 22154331), (27, 7384777), (43, 4636953), (129, 1545651), (263, 758133), (387, 515217), (653, 305343), (789, 252711), (1161, 171739), (1959, 101781), (2367, 84237), (5877, 33927), (7101, 28079), (11309, 17631)]