208971

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:151

約数の個数: 24

約数和(自身を含む): 359424

約数和(自身を除く): 150453

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 107, 217, 279, 321, 651, 749, 963, 1953, 2247, 3317, 6741, 9951, 23219, 29853, 69657, 208971]

約数ペア:

[(1, 208971), (3, 69657), (7, 29853), (9, 23219), (21, 9951), (31, 6741), (63, 3317), (93, 2247), (107, 1953), (217, 963), (279, 749), (321, 651)]