199777557

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{79943}}^1$

素因数の和:79977

約数の個数: 24

約数和(自身を含む): 328090176

約数和(自身を除く): 128312619

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 79943, 239829, 559601, 1359031, 1678803, 3917207, 4077093, 9513217, 11751621, 28539651, 66592519, 199777557]

約数ペア:

[(1, 199777557), (3, 66592519), (7, 28539651), (17, 11751621), (21, 9513217), (49, 4077093), (51, 3917207), (119, 1678803), (147, 1359031), (357, 559601), (833, 239829), (2499, 79943)]