197821449

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{66809}}^1$

素因数の和:66869

約数の個数: 24

約数和(自身を含む): 333515520

約数和(自身を除く): 135694071

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 66809, 200427, 467663, 601281, 1402989, 3140023, 4208967, 9420069, 21980161, 28260207, 65940483, 197821449]

約数ペア:

[(1, 197821449), (3, 65940483), (7, 28260207), (9, 21980161), (21, 9420069), (47, 4208967), (63, 3140023), (141, 1402989), (329, 601281), (423, 467663), (987, 200427), (2961, 66809)]